0

Can some help me to convert the below xml data into php array. Thanks in advance.

<dataroot>
              <content id= "1">
                            <quest><![CDATA[<FONT FACE="Arial">Which of the following is not the measure of a physical quantity?</FONT>]]></quest>
                            <opt1><![CDATA[<FONT FACE="Arial">kilogram</FONT>]]></opt1>
                            <opt2><![CDATA[<FONT FACE="Arial">impulse</FONT>]]></opt2>
                            <opt3><![CDATA[<FONT FACE="Arial">energy</FONT>]]></opt3>
                            <opt4><![CDATA[<FONT FACE="Arial">density</FONT>]]></opt4>
                            <ans><![CDATA[a]]></ans>
                            <ans_desc><![CDATA[<FONT FACE="Arial">kilogram is the name of the fundamental unit of mass</FONT>]]></ans_desc>
              </content>
              <content id= "2">
                            <quest><![CDATA[<FONT FACE="Arial">Which of the following sets can enter into the list of fundamental quantities 
  in any system of units?</FONT>]]></quest>
                            <opt1><![CDATA[<FONT FACE="Arial">length, mass and velocity</FONT>]]></opt1>
                            <opt2><![CDATA[<FONT FACE="Arial">length, time and velocity</FONT>]]></opt2>
                            <opt3><![CDATA[<FONT FACE="Arial">mass, time and velocity</FONT>]]></opt3>
                            <opt4><![CDATA[<FONT FACE="Arial">length, time and mass</FONT>]]></opt4>
                            <ans><![CDATA[d]]></ans>
                            <ans_desc><![CDATA[<FONT FACE="Arial">velocity cannot enter in this set because it itself involves length and time.</FONT>]]></ans_desc>
              </content>
              <content id= "3">
                            <quest><![CDATA[<FONT FACE="Arial">If the unit of force and length are doubled, the unit of energy will be</FONT>]]></quest>
                            <opt1><![CDATA[<FONT FACE="Arial">Πtimes</FONT>]]></opt1>
                            <opt2><![CDATA[<FONT FACE="Arial">œ times</FONT>]]></opt2>
                            <opt3><![CDATA[<FONT FACE="Arial">2 times</FONT>]]></opt3>
                            <opt4><![CDATA[<FONT FACE="Arial">4 times</FONT>]]></opt4>
                            <ans><![CDATA[d]]></ans>
                            <ans_desc><![CDATA[<FONT FACE="Arial"><P>Energy = Force <img src="Images/Phys1/XLAD670.gif" WIDTH=12 HEIGHT=13 align="absmiddle"> 
  distance = Force <img src="Images/Phys1/XLAD670.gif" WIDTH=12 HEIGHT=13 align="absmiddle"> 
  length.</P>
<P>When force and length are doubled, the unit of energy will becomes four times 
  that of its initial value.</P>
</FONT>]]></ans_desc>
              </content>
              <content id= "4">
                            <quest><![CDATA[<FONT FACE="Arial">Given that displacement of a particle is given by <img src="Images/Phys1/XLQ680.gif" WIDTH=101 HEIGHT=21 align="absmiddle"> 
  where t denotes the time. The unit of K is</FONT>]]></quest>
                            <opt1><![CDATA[<FONT FACE="Arial">hertz</FONT>]]></opt1>
                            <opt2><![CDATA[<FONT FACE="Arial">metre</FONT>]]></opt2>
                            <opt3><![CDATA[<FONT FACE="Arial">radian</FONT>]]></opt3>
                            <opt4><![CDATA[<FONT FACE="Arial">second</FONT>]]></opt4>
                            <ans><![CDATA[a]]></ans>
                            <ans_desc><![CDATA[<FONT FACE="Arial"><P>Here K is dimensionless. Thus </P>
<P><img src="Images/Phys1/XLAD680.gif" WIDTH=198 HEIGHT=41 align="absmiddle"></P>
</FONT>]]></ans_desc>
              </content>
              <content id= "5">
                            <quest><![CDATA[<FONT FACE="Arial">Dimensions of velocity gradient are same as that of </FONT>]]></quest>
                            <opt1><![CDATA[<FONT FACE="Arial">time period</FONT>]]></opt1>
                            <opt2><![CDATA[<FONT FACE="Arial">frequency</FONT>]]></opt2>
                            <opt3><![CDATA[<FONT FACE="Arial">angular acceleration</FONT>]]></opt3>
                            <opt4><![CDATA[<FONT FACE="Arial">acceleration</FONT>]]></opt4>
                            <ans><![CDATA[b]]></ans>
                            <ans_desc><![CDATA[<FONT FACE="Arial"><P>[velocity gradient ]</P>
<P>= [ velocity] / [ distance]</P>
<P><img src="Images/Phys1/XLAD690.gif" WIDTH=128 HEIGHT=24 align="absmiddle"></P>
</FONT>]]></ans_desc>
              </content>
              <content id= "6">
                            <quest><![CDATA[<FONT FACE="Arial">Which of the following physical quantities is/are dimensionless?</FONT>]]></quest>
                            <opt1><![CDATA[<FONT FACE="Arial">length</FONT>]]></opt1>
                            <opt2><![CDATA[<FONT FACE="Arial">time</FONT>]]></opt2>
                            <opt3><![CDATA[<FONT FACE="Arial">mass</FONT>]]></opt3>
                            <opt4><![CDATA[<FONT FACE="Arial">all of these</FONT>]]></opt4>
                            <ans><![CDATA[d]]></ans>
                            <ans_desc><![CDATA[<FONT FACE="Arial">all these quantities are dimensionless.</FONT>]]></ans_desc>
              </content>
              <content id= "7">
                            <quest><![CDATA[<FONT FACE="Arial">Erg <img src="Images/Phys1/XLQ710.gif" WIDTH=12 HEIGHT=13 align="absmiddle"> 
  sec is the unit of </FONT>]]></quest>
                            <opt1><![CDATA[<FONT FACE="Arial">angle</FONT>]]></opt1>
                            <opt2><![CDATA[<FONT FACE="Arial">momentum</FONT>]]></opt2>
                            <opt3><![CDATA[<FONT FACE="Arial">gravitational constant</FONT>]]></opt3>
                            <opt4><![CDATA[<FONT FACE="Arial">Planck's constant</FONT>]]></opt4>
                            <ans><![CDATA[d]]></ans>
                            <ans_desc><![CDATA[<FONT FACE="Arial">The unit of Planck&#8217;s constant is <img src="Images/Phys1/XLAD710.gif" WIDTH=57 HEIGHT=17 align="absmiddle"></FONT>]]></ans_desc>
              </content>
              <content id= "8">
                            <quest><![CDATA[<FONT FACE="Arial">Which of the following have same dimension?</FONT>]]></quest>
                            <opt1><![CDATA[<FONT FACE="Arial">pressure and density</FONT>]]></opt1>
                            <opt2><![CDATA[<FONT FACE="Arial">gravitational potential and energy</FONT>]]></opt2>
                            <opt3><![CDATA[<FONT FACE="Arial">impulse and momentum</FONT>]]></opt3>
                            <opt4><![CDATA[<FONT FACE="Arial">stress and strain</FONT>]]></opt4>
                            <ans><![CDATA[c]]></ans>
                            <ans_desc><![CDATA[<FONT FACE="Arial"><P>Impulse = force <img src="Images/Phys1/XLAD720.gif" WIDTH=12 HEIGHT=13 align="absmiddle"> 
  time</P>
<P><img src="Images/Phys1/XLAD721.gif" WIDTH=144 HEIGHT=22 align="absmiddle"></P>
<P>Momentum = mass <img src="Images/Phys1/XLAD720.gif" WIDTH=12 HEIGHT=13 align="absmiddle"> 
  velocity </P>
<P><img src="Images/Phys1/XLAD723.gif" WIDTH=69 HEIGHT=22 align="absmiddle"></P>
<P><img src="Images/Phys1/XLAD724.gif" WIDTH=64 HEIGHT=21 align="absmiddle"></P>
</FONT>]]></ans_desc>
              </content>
              <content id= "9">
                            <quest><![CDATA[<FONT FACE="Arial">Which of the following pairs of physical quantities will have same dimensional 
  formula</FONT>]]></quest>
                            <opt1><![CDATA[<FONT FACE="Arial">work and couple</FONT>]]></opt1>
                            <opt2><![CDATA[<FONT FACE="Arial">force and power</FONT>]]></opt2>
                            <opt3><![CDATA[<FONT FACE="Arial">latent heat and specific heat</FONT>]]></opt3>
                            <opt4><![CDATA[<FONT FACE="Arial">work and power</FONT>]]></opt4>
                            <ans><![CDATA[a]]></ans>
                            <ans_desc><![CDATA[<FONT FACE="Arial"><P>work = force <img src="Images/Phys1/XLAD730.gif" WIDTH=12 HEIGHT=13 align="absmiddle"> 
  displacement</P>
<P><img src="Images/Phys1/XLAD731.gif" WIDTH=245 HEIGHT=24 align="absmiddle"></P>
<P><img src="Images/Phys1/XLAD732.gif" WIDTH=209 HEIGHT=21 align="absmiddle"></P>
<P><img src="Images/Phys1/XLAD733.gif" WIDTH=90 HEIGHT=22 align="absmiddle"></P>
<P><img src="Images/Phys1/XLAD734.gif" WIDTH=69 HEIGHT=22 align="absmiddle"></P>
</FONT>]]></ans_desc>
              </content>
              <content id= "10">
                            <quest><![CDATA[<FONT FACE="Arial">Planck&#8217;s constant has same dimension as</FONT>]]></quest>
                            <opt1><![CDATA[<FONT FACE="Arial">energy</FONT>]]></opt1>
                            <opt2><![CDATA[<FONT FACE="Arial">force</FONT>]]></opt2>
                            <opt3><![CDATA[<FONT FACE="Arial">linear momentum</FONT>]]></opt3>
                            <opt4><![CDATA[<FONT FACE="Arial">angular momentum</FONT>]]></opt4>
                            <ans><![CDATA[d]]></ans>
                            <ans_desc><![CDATA[<FONT FACE="Arial"><P><img src="Images/Phys1/XLAD740.gif" WIDTH=114 HEIGHT=17 align="absmiddle"></P>
<P><img src="Images/Phys1/XLAD741.gif" WIDTH=161 HEIGHT=44 align="absmiddle"></P>
<P>Angular momentum <img src="Images/Phys1/XLAD742.gif" WIDTH=28 HEIGHT=17 align="absmiddle"></P>
<P><img src="Images/Phys1/XLAD743.gif" WIDTH=142 HEIGHT=22 align="absmiddle"></P>
</FONT>]]></ans_desc>
              </content>
              <content id= "11">
                            <quest><![CDATA[<FONT FACE="Arial">The dimension of Planck&#8217;s constant is</FONT>]]></quest>
                            <opt1><![CDATA[<FONT FACE="Arial"><img src="Images/Phys1/XLA750.gif" WIDTH=48 HEIGHT=18 align="absmiddle"></FONT>]]></opt1>
                            <opt2><![CDATA[<FONT FACE="Arial"><img src="Images/Phys1/XLB750.gif" WIDTH=49 HEIGHT=17 align="absmiddle"></FONT>]]></opt2>
                            <opt3><![CDATA[<FONT FACE="Arial"><img src="Images/Phys1/XLC750.gif" WIDTH=53 HEIGHT=18 align="absmiddle"></FONT>]]></opt3>
                            <opt4><![CDATA[<FONT FACE="Arial"><img src="Images/Phys1/XLD750.gif" WIDTH=64 HEIGHT=18 align="absmiddle"></FONT>]]></opt4>
                            <ans><![CDATA[a]]></ans>
                            <ans_desc><![CDATA[<FONT FACE="Arial"><P>We know that E=hv</P>
<P><img src="Images/Phys1/XLAD750.gif" WIDTH=189 HEIGHT=22 align="absmiddle"></P>
<P><img src="Images/Phys1/XLAD751.gif" WIDTH=66 HEIGHT=22 align="absmiddle"></P>
</FONT>]]></ans_desc>
              </content>
              <content id= "12">
                            <quest><![CDATA[<FONT FACE="Arial">Dimension of torque is </FONT>]]></quest>
                            <opt1><![CDATA[<FONT FACE="Arial"><img src="Images/Phys1/XLA760.gif" WIDTH=48 HEIGHT=18 align="absmiddle"></FONT>]]></opt1>
                            <opt2><![CDATA[<FONT FACE="Arial"><img src="Images/Phys1/XLB760.gif" WIDTH=45 HEIGHT=18 align="absmiddle"></FONT>]]></opt2>
                            <opt3><![CDATA[<FONT FACE="Arial"><img src="Images/Phys1/XLC760.gif" WIDTH=50 HEIGHT=18 align="absmiddle"></FONT>]]></opt3>
                            <opt4><![CDATA[<FONT FACE="Arial"><img src="Images/Phys1/XLD760.gif" WIDTH=44 HEIGHT=18 align="absmiddle"></FONT>]]></opt4>
                            <ans><![CDATA[c]]></ans>
                            <ans_desc><![CDATA[<FONT FACE="Arial"><P>Torque = force <img src="Images/Phys1/XLAD760.gif" WIDTH=12 HEIGHT=13 align="absmiddle"> 
  distance</P>
<P><img src="Images/Phys1/XLAD761.gif" WIDTH=80 HEIGHT=22 align="absmiddle"></P>
<P><img src="Images/Phys1/XLAD762.gif" WIDTH=69 HEIGHT=22 align="absmiddle"></P>
</FONT>]]></ans_desc>
              </content>
              <content id= "13">
                            <quest><![CDATA[<FONT FACE="Arial">The dimensions of angular velocity is</FONT>]]></quest>
                            <opt1><![CDATA[<FONT FACE="Arial"><img src="Images/Phys1/XLA770.gif" WIDTH=45 HEIGHT=18 align="absmiddle"></FONT>]]></opt1>
                            <opt2><![CDATA[<FONT FACE="Arial"><img src="Images/Phys1/XLB770.gif" WIDTH=57 HEIGHT=18 align="absmiddle"></FONT>]]></opt2>
                            <opt3><![CDATA[<FONT FACE="Arial"><img src="Images/Phys1/XLC770.gif" WIDTH=57 HEIGHT=18 align="absmiddle"></FONT>]]></opt3>
                            <opt4><![CDATA[<FONT FACE="Arial"><img src="Images/Phys1/XLD770.gif" WIDTH=50 HEIGHT=18 align="absmiddle"></FONT>c]]></opt4>
                            <ans><![CDATA[c]]></ans>
                            <ans_desc><![CDATA[<FONT FACE="Arial"><P><img src="Images/Phys1/XLAD770.gif" WIDTH=168 HEIGHT=36 align="absmiddle"></P>
<P><img src="Images/Phys1/XLAD771.gif" WIDTH=86 HEIGHT=38 align="absmiddle"></P>
<P><img src="Images/Phys1/XLAD772.gif" WIDTH=124 HEIGHT=22 align="absmiddle"></P>
</FONT>]]></ans_desc>
              </content>
              <content id= "14">
                            <quest><![CDATA[<FONT FACE="Arial">If <img src="Images/Phys1/XLQ780.gif" WIDTH=70 HEIGHT=18 align="absmiddle"> 
  <FONT FACE="Arial">were chosen as fundamental units of force, velocity and time 
  respectively, the dimensions of mass would be represented as </FONT></FONT>]]></quest>
                            <opt1><![CDATA[<FONT FACE="Arial"><img src="Images/Phys1/XLA780.gif" WIDTH=36 HEIGHT=16 align="absmiddle"></FONT>]]></opt1>
                            <opt2><![CDATA[<FONT FACE="Arial"><img src="Images/Phys1/XLB780.gif" WIDTH=44 HEIGHT=18 align="absmiddle"></FONT>]]></opt2>
                            <opt3><![CDATA[<FONT FACE="Arial"><img src="Images/Phys1/XLC780.gif" WIDTH=45 HEIGHT=18 align="absmiddle"></FONT>]]></opt3>
                            <opt4><![CDATA[<FONT FACE="Arial"><img src="Images/Phys1/XLD780.gif" WIDTH=54 HEIGHT=18 align="absmiddle"></FONT>]]></opt4>
                            <ans><![CDATA[c]]></ans>
                            <ans_desc><![CDATA[<FONT FACE="Arial"><P>We know that Force = mass <img src="Images/Phys1/XLAD780.gif" WIDTH=12 HEIGHT=13 align="absmiddle"> 
  acceleration</P>
<P><img src="Images/Phys1/XLAD781.gif" WIDTH=266 HEIGHT=38 align="absmiddle"></P>
<P><img src="Images/Phys1/XLAD782.gif" WIDTH=100 HEIGHT=38 align="absmiddle"></P>
</FONT>]]></ans_desc>
              </content>
              <content id= "15">
                            <quest><![CDATA[<FONT FACE="Arial">If energy E, velocity V and time T are taken as the fundamental units, what 
  is the dimensional formula for energy per unit area?</FONT>]]></quest>
                            <opt1><![CDATA[<FONT FACE="Arial">E V T</FONT>]]></opt1>
                            <opt2><![CDATA[<FONT FACE="Arial"><img src="Images/Phys1/XLB790.gif" WIDTH=54 HEIGHT=18 align="absmiddle"></FONT>]]></opt2>
                            <opt3><![CDATA[<FONT FACE="Arial"><img src="Images/Phys1/XLC790.gif" WIDTH=57 HEIGHT=18 align="absmiddle"></FONT>]]></opt3>
                            <opt4><![CDATA[<FONT FACE="Arial"><img src="Images/Phys1/XLD790.gif" WIDTH=56 HEIGHT=18 align="absmiddle"></FONT>]]></opt4>
                            <ans><![CDATA[c]]></ans>
                            <ans_desc><![CDATA[<FONT FACE="Arial"><P><img src="Images/Phys1/XLAD790.gif" WIDTH=81 HEIGHT=36 align="absmiddle"> 
  Here a= 1</P>
<P>Now <img src="Images/Phys1/XLAD791.gif" WIDTH=65 HEIGHT=36 align="absmiddle"></P>
<P>Or&#9;<img src="Images/Phys1/XLAD792.gif" WIDTH=114 HEIGHT=22 align="absmiddle"></P>
<P>&#9;<img src="Images/Phys1/XLAD793.gif" WIDTH=68 HEIGHT=22 align="absmiddle"></P>
<P>This gives <img src="Images/Phys1/XLAD794.gif" WIDTH=133 HEIGHT=17 align="absmiddle"></P>
<P>So,&#9;&#9;c= -2</P>
<P><img src="Images/Phys1/XLAD795.gif" WIDTH=132 HEIGHT=41 align="absmiddle"></P>
</FONT>]]></ans_desc>
              </content>
              <content id= "16">
                            <quest><![CDATA[<FONT FACE="Arial">If the volocity of light c, universal gravitational constant G and Planck&#8217;s 
  constant h be taken as the fundamental units, then the dimentional formula for 
  mass is.</FONT>]]></quest>
                            <opt1><![CDATA[<FONT FACE="Arial"><img src="Images/Phys1/XLA800.gif" WIDTH=54 HEIGHT=25 align="absmiddle"></FONT>]]></opt1>
                            <opt2><![CDATA[<FONT FACE="Arial"><img src="Images/Phys1/XLB800.gif" WIDTH=54 HEIGHT=25 align="absmiddle"></FONT>]]></opt2>
                            <opt3><![CDATA[<FONT FACE="Arial"><img src="Images/Phys1/XLC800.gif" WIDTH=54 HEIGHT=25 align="absmiddle"></FONT>]]></opt3>
                            <opt4><![CDATA[<FONT FACE="Arial"><img src="Images/Phys1/XLD800.gif" WIDTH=44 HEIGHT=22 align="absmiddle"></FONT>]]></opt4>
                            <ans><![CDATA[a]]></ans>
                            <ans_desc><![CDATA[<FONT FACE="Arial"><P>Let <img src="Images/Phys1/XLAD800.gif" WIDTH=74 HEIGHT=20 align="absmiddle"></P>
<P>&#9;<img src="Images/Phys1/XLAD801.gif" WIDTH=229 HEIGHT=22 align="absmiddle"></P>
<P>&#9;<img src="Images/Phys1/XLAD802.gif" WIDTH=168 HEIGHT=21 align="absmiddle"></P>
<P>So,&#9;<img src="Images/Phys1/XLAD803.gif" WIDTH=145 HEIGHT=18 align="absmiddle"></P>
<P>And &#9;<img src="Images/Phys1/XLAD804.gif" WIDTH=88 HEIGHT=17 align="absmiddle"></P>
<P>Solving, we get <img src="Images/Phys1/XLAD805.gif" WIDTH=140 HEIGHT=36 align="absmiddle"></P>
<P>&#9;&#9;<img src="Images/Phys1/XLAD806.gif" WIDTH=110 HEIGHT=26 align="absmiddle"></P>
</FONT>]]></ans_desc>
              </content>
              <content id= "17">
                            <quest><![CDATA[<FONT FACE="Arial">A quantity X multiplied by time gives angular momentum. Then dimensional 
  formula of X is</FONT>]]></quest>
                            <opt1><![CDATA[<FONT FACE="Arial"><img src="Images/Phys1/XLA810.gif" WIDTH=50 HEIGHT=18 align="absmiddle"></FONT>]]></opt1>
                            <opt2><![CDATA[<FONT FACE="Arial"><img src="Images/Phys1/XLB810.gif" WIDTH=29 HEIGHT=18 align="absmiddle"></FONT>]]></opt2>
                            <opt3><![CDATA[<FONT FACE="Arial"><img src="Images/Phys1/XLC810.gif" WIDTH=50 HEIGHT=18 align="absmiddle"></FONT>]]></opt3>
                            <opt4><![CDATA[<FONT FACE="Arial"><img src="Images/Phys1/XLD810.gif" WIDTH=49 HEIGHT=18 align="absmiddle"></FONT>]]></opt4>
                            <ans><![CDATA[a]]></ans>
                            <ans_desc><![CDATA[<FONT FACE="Arial"><P>Angular momentum = m v r</P>
<P><img src="Images/Phys1/XLAD810.gif" WIDTH=14 HEIGHT=13 align="absmiddle"> 
  dimensions of angular momentum</P>
<P><img src="Images/Phys1/XLAD811.gif" WIDTH=140 HEIGHT=22 align="absmiddle"></P>
<P><img src="Images/Phys1/XLAD812.gif" WIDTH=205 HEIGHT=22 align="absmiddle"></P>
<P><img src="Images/Phys1/XLAD813.gif" WIDTH=196 HEIGHT=22 align="absmiddle"></P>
</FONT>]]></ans_desc>
              </content>
              <content id= "18">
                            <quest><![CDATA[<FONT FACE="Arial">What is the dimensional fromula of <img src="Images/Phys1/XLQ820.gif" WIDTH=29 HEIGHT=20 align="absmiddle"> 
  where the letters have their their usual meanings</FONT>]]></quest>
                            <opt1><![CDATA[<FONT FACE="Arial"><img src="Images/Phys1/XLA820.gif" WIDTH=54 HEIGHT=21 align="absmiddle"></FONT>]]></opt1>
                            <opt2><![CDATA[<FONT FACE="Arial"><img src="Images/Phys1/XLB820.gif" WIDTH=54 HEIGHT=21 align="absmiddle"></FONT>]]></opt2>
                            <opt3><![CDATA[<FONT FACE="Arial"><img src="Images/Phys1/XLC820.gif" WIDTH=57 HEIGHT=21 align="absmiddle"></FONT>]]></opt3>
                            <opt4><![CDATA[<FONT FACE="Arial"><img src="Images/Phys1/XLD820.gif" WIDTH=66 HEIGHT=21 align="absmiddle"></FONT>]]></opt4>
                            <ans><![CDATA[c]]></ans>
                            <ans_desc><![CDATA[<FONT FACE="Arial"><P><img src="Images/Phys1/XLAD820.gif" WIDTH=150 HEIGHT=22 align="absmiddle"></P>
<P><img src="Images/Phys1/XLAD821.gif" WIDTH=138 HEIGHT=22 align="absmiddle"></P>
</FONT>]]></ans_desc>
              </content>
              <content id= "19">
                            <quest><![CDATA[<FONT FACE="Arial">Given that <img src="Images/Phys1/XLQ830.gif" WIDTH=68 HEIGHT=20 align="absmiddle"> 
  , where F denotes force and t time, then the dimensions of a and b are respectively.</FONT>]]></quest>
                            <opt1><![CDATA[<FONT FACE="Arial"><img src="Images/Phys1/XLA830.gif" WIDTH=101 HEIGHT=22 align="absmiddle"></FONT>]]></opt1>
                            <opt2><![CDATA[<FONT FACE="Arial"><img src="Images/Phys1/XLB830.gif" WIDTH=62 HEIGHT=20 align="absmiddle"></FONT>]]></opt2>
                            <opt3><![CDATA[<FONT FACE="Arial"><img src="Images/Phys1/XLC830.gif" WIDTH=85 HEIGHT=20 align="absmiddle"></FONT>]]></opt3>
                            <opt4><![CDATA[<FONT FACE="Arial"><img src="Images/Phys1/XLD830.gif" WIDTH=129 HEIGHT=20 align="absmiddle"></FONT>]]></opt4>
                            <ans><![CDATA[d]]></ans>
                            <ans_desc><![CDATA[<FONT FACE="Arial"><P><img src="Images/Phys1/XLAD830.gif" WIDTH=74 HEIGHT=20 align="absmiddle"></P>
<P><img src="Images/Phys1/XLAD831.gif" WIDTH=198 HEIGHT=41 align="absmiddle"></P>
<P><img src="Images/Phys1/XLAD832.gif" WIDTH=178 HEIGHT=42 align="absmiddle"></P>
</FONT>]]></ans_desc>
              </content>
              <content id= "20">
                            <quest><![CDATA[<FONT FACE="Arial">If K represents kinetic energy, V velocity and T time and these are chosed as the fundamental units then , the 
  unit of surface tension will be</FONT>]]></quest>
                            <opt1><![CDATA[<FONT FACE="Arial"><img src="Images/Phys1/XLA840.gif" WIDTH=56 HEIGHT=18 align="absmiddle"></FONT>]]></opt1>
                            <opt2><![CDATA[<FONT FACE="Arial"><img src="Images/Phys1/XLB840.gif" WIDTH=58 HEIGHT=18 align="absmiddle"></FONT>]]></opt2>
                            <opt3><![CDATA[<FONT FACE="Arial"><img src="Images/Phys1/XLC840.gif" WIDTH=62 HEIGHT=18 align="absmiddle"></FONT>]]></opt3>
                            <opt4><![CDATA[<FONT FACE="Arial"><img src="Images/Phys1/XLD840.gif" WIDTH=58 HEIGHT=18 align="absmiddle"></FONT>]]></opt4>
                            <ans><![CDATA[a]]></ans>
                            <ans_desc><![CDATA[<FONT FACE="Arial"><P><img src="Images/Phys1/XLAD840.gif" WIDTH=157 HEIGHT=22 align="absmiddle"></P>
<P><img src="Images/Phys1/XLAD841.gif" WIDTH=312 HEIGHT=44 align="absmiddle"></P>
<P><img src="Images/Phys1/XLAD842.gif" WIDTH=160 HEIGHT=44 align="absmiddle"></P>
<P><img src="Images/Phys1/XLAD843.gif" WIDTH=74 HEIGHT=22 align="absmiddle"></P>
</FONT>]]></ans_desc>
              </content>
</dataroot>

Edited by Dani: Fixed formatting

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Last Post by cereal
0

Load data into a variable, like $xml and use SimpleXML:

$data = new SimpleXMLElement($xml,LIBXML_NOCDATA);
$array = json_decode(json_encode($data),true);
print_r($array);

json_encode/decode will remove the SimpleXML obj.

0

$data = new SimpleXMLElement($xml,LIBXML_NOCDATA);
$array = json_decode(json_encode($data),true);
print_r($array);

Thankyou, I have tried the code, it has thrown a series of errors...

1

What kind? This works for me:

<?php
$xml = <<<XML
<dataroot>
              <content id= "1">
                            <quest><![CDATA[<FONT FACE="Arial">Which of the following is not the measure of a physical quantity?</FONT>]]></quest>
                            <opt1><![CDATA[<FONT FACE="Arial">kilogram</FONT>]]></opt1>
                            <opt2><![CDATA[<FONT FACE="Arial">impulse</FONT>]]></opt2>
                            <opt3><![CDATA[<FONT FACE="Arial">energy</FONT>]]></opt3>
                            <opt4><![CDATA[<FONT FACE="Arial">density</FONT>]]></opt4>
                            <ans><![CDATA[a]]></ans>
                            <ans_desc><![CDATA[<FONT FACE="Arial">kilogram is the name of the fundamental unit of mass</FONT>]]></ans_desc>
              </content>
              <content id= "2">
                            <quest><![CDATA[<FONT FACE="Arial">Which of the following sets can enter into the list of fundamental quantities 
  in any system of units?</FONT>]]></quest>
                            <opt1><![CDATA[<FONT FACE="Arial">length, mass and velocity</FONT>]]></opt1>
                            <opt2><![CDATA[<FONT FACE="Arial">length, time and velocity</FONT>]]></opt2>
                            <opt3><![CDATA[<FONT FACE="Arial">mass, time and velocity</FONT>]]></opt3>
                            <opt4><![CDATA[<FONT FACE="Arial">length, time and mass</FONT>]]></opt4>
                            <ans><![CDATA[d]]></ans>
                            <ans_desc><![CDATA[<FONT FACE="Arial">velocity cannot enter in this set because it itself involves length and time.</FONT>]]></ans_desc>
              </content>
              <content id= "3">
                            <quest><![CDATA[<FONT FACE="Arial">If the unit of force and length are doubled, the unit of energy will be</FONT>]]></quest>
                            <opt1><![CDATA[<FONT FACE="Arial">Πtimes</FONT>]]></opt1>
                            <opt2><![CDATA[<FONT FACE="Arial">œ times</FONT>]]></opt2>
                            <opt3><![CDATA[<FONT FACE="Arial">2 times</FONT>]]></opt3>
                            <opt4><![CDATA[<FONT FACE="Arial">4 times</FONT>]]></opt4>
                            <ans><![CDATA[d]]></ans>
                            <ans_desc><![CDATA[<FONT FACE="Arial"><P>Energy = Force <img src="Images/Phys1/XLAD670.gif" WIDTH=12 HEIGHT=13 align="absmiddle"> 
  distance = Force <img src="Images/Phys1/XLAD670.gif" WIDTH=12 HEIGHT=13 align="absmiddle"> 
  length.</P>
<P>When force and length are doubled, the unit of energy will becomes four times 
  that of its initial value.</P>
</FONT>]]></ans_desc>
              </content>
              <content id= "4">
                            <quest><![CDATA[<FONT FACE="Arial">Given that displacement of a particle is given by <img src="Images/Phys1/XLQ680.gif" WIDTH=101 HEIGHT=21 align="absmiddle"> 
  where t denotes the time. The unit of K is</FONT>]]></quest>
                            <opt1><![CDATA[<FONT FACE="Arial">hertz</FONT>]]></opt1>
                            <opt2><![CDATA[<FONT FACE="Arial">metre</FONT>]]></opt2>
                            <opt3><![CDATA[<FONT FACE="Arial">radian</FONT>]]></opt3>
                            <opt4><![CDATA[<FONT FACE="Arial">second</FONT>]]></opt4>
                            <ans><![CDATA[a]]></ans>
                            <ans_desc><![CDATA[<FONT FACE="Arial"><P>Here K is dimensionless. Thus </P>
<P><img src="Images/Phys1/XLAD680.gif" WIDTH=198 HEIGHT=41 align="absmiddle"></P>
</FONT>]]></ans_desc>
              </content>
              <content id= "5">
                            <quest><![CDATA[<FONT FACE="Arial">Dimensions of velocity gradient are same as that of </FONT>]]></quest>
                            <opt1><![CDATA[<FONT FACE="Arial">time period</FONT>]]></opt1>
                            <opt2><![CDATA[<FONT FACE="Arial">frequency</FONT>]]></opt2>
                            <opt3><![CDATA[<FONT FACE="Arial">angular acceleration</FONT>]]></opt3>
                            <opt4><![CDATA[<FONT FACE="Arial">acceleration</FONT>]]></opt4>
                            <ans><![CDATA[b]]></ans>
                            <ans_desc><![CDATA[<FONT FACE="Arial"><P>[velocity gradient ]</P>
<P>= [ velocity] / [ distance]</P>
<P><img src="Images/Phys1/XLAD690.gif" WIDTH=128 HEIGHT=24 align="absmiddle"></P>
</FONT>]]></ans_desc>
              </content>
              <content id= "6">
                            <quest><![CDATA[<FONT FACE="Arial">Which of the following physical quantities is/are dimensionless?</FONT>]]></quest>
                            <opt1><![CDATA[<FONT FACE="Arial">length</FONT>]]></opt1>
                            <opt2><![CDATA[<FONT FACE="Arial">time</FONT>]]></opt2>
                            <opt3><![CDATA[<FONT FACE="Arial">mass</FONT>]]></opt3>
                            <opt4><![CDATA[<FONT FACE="Arial">all of these</FONT>]]></opt4>
                            <ans><![CDATA[d]]></ans>
                            <ans_desc><![CDATA[<FONT FACE="Arial">all these quantities are dimensionless.</FONT>]]></ans_desc>
              </content>
              <content id= "7">
                            <quest><![CDATA[<FONT FACE="Arial">Erg <img src="Images/Phys1/XLQ710.gif" WIDTH=12 HEIGHT=13 align="absmiddle"> 
  sec is the unit of </FONT>]]></quest>
                            <opt1><![CDATA[<FONT FACE="Arial">angle</FONT>]]></opt1>
                            <opt2><![CDATA[<FONT FACE="Arial">momentum</FONT>]]></opt2>
                            <opt3><![CDATA[<FONT FACE="Arial">gravitational constant</FONT>]]></opt3>
                            <opt4><![CDATA[<FONT FACE="Arial">Planck's constant</FONT>]]></opt4>
                            <ans><![CDATA[d]]></ans>
                            <ans_desc><![CDATA[<FONT FACE="Arial">The unit of Planck’s constant is <img src="Images/Phys1/XLAD710.gif" WIDTH=57 HEIGHT=17 align="absmiddle"></FONT>]]></ans_desc>
              </content>
              <content id= "8">
                            <quest><![CDATA[<FONT FACE="Arial">Which of the following have same dimension?</FONT>]]></quest>
                            <opt1><![CDATA[<FONT FACE="Arial">pressure and density</FONT>]]></opt1>
                            <opt2><![CDATA[<FONT FACE="Arial">gravitational potential and energy</FONT>]]></opt2>
                            <opt3><![CDATA[<FONT FACE="Arial">impulse and momentum</FONT>]]></opt3>
                            <opt4><![CDATA[<FONT FACE="Arial">stress and strain</FONT>]]></opt4>
                            <ans><![CDATA[c]]></ans>
                            <ans_desc><![CDATA[<FONT FACE="Arial"><P>Impulse = force <img src="Images/Phys1/XLAD720.gif" WIDTH=12 HEIGHT=13 align="absmiddle"> 
  time</P>
<P><img src="Images/Phys1/XLAD721.gif" WIDTH=144 HEIGHT=22 align="absmiddle"></P>
<P>Momentum = mass <img src="Images/Phys1/XLAD720.gif" WIDTH=12 HEIGHT=13 align="absmiddle"> 
  velocity </P>
<P><img src="Images/Phys1/XLAD723.gif" WIDTH=69 HEIGHT=22 align="absmiddle"></P>
<P><img src="Images/Phys1/XLAD724.gif" WIDTH=64 HEIGHT=21 align="absmiddle"></P>
</FONT>]]></ans_desc>
              </content>
              <content id= "9">
                            <quest><![CDATA[<FONT FACE="Arial">Which of the following pairs of physical quantities will have same dimensional 
  formula</FONT>]]></quest>
                            <opt1><![CDATA[<FONT FACE="Arial">work and couple</FONT>]]></opt1>
                            <opt2><![CDATA[<FONT FACE="Arial">force and power</FONT>]]></opt2>
                            <opt3><![CDATA[<FONT FACE="Arial">latent heat and specific heat</FONT>]]></opt3>
                            <opt4><![CDATA[<FONT FACE="Arial">work and power</FONT>]]></opt4>
                            <ans><![CDATA[a]]></ans>
                            <ans_desc><![CDATA[<FONT FACE="Arial"><P>work = force <img src="Images/Phys1/XLAD730.gif" WIDTH=12 HEIGHT=13 align="absmiddle"> 
  displacement</P>
<P><img src="Images/Phys1/XLAD731.gif" WIDTH=245 HEIGHT=24 align="absmiddle"></P>
<P><img src="Images/Phys1/XLAD732.gif" WIDTH=209 HEIGHT=21 align="absmiddle"></P>
<P><img src="Images/Phys1/XLAD733.gif" WIDTH=90 HEIGHT=22 align="absmiddle"></P>
<P><img src="Images/Phys1/XLAD734.gif" WIDTH=69 HEIGHT=22 align="absmiddle"></P>
</FONT>]]></ans_desc>
              </content>
              <content id= "10">
                            <quest><![CDATA[<FONT FACE="Arial">Planck’s constant has same dimension as</FONT>]]></quest>
                            <opt1><![CDATA[<FONT FACE="Arial">energy</FONT>]]></opt1>
                            <opt2><![CDATA[<FONT FACE="Arial">force</FONT>]]></opt2>
                            <opt3><![CDATA[<FONT FACE="Arial">linear momentum</FONT>]]></opt3>
                            <opt4><![CDATA[<FONT FACE="Arial">angular momentum</FONT>]]></opt4>
                            <ans><![CDATA[d]]></ans>
                            <ans_desc><![CDATA[<FONT FACE="Arial"><P><img src="Images/Phys1/XLAD740.gif" WIDTH=114 HEIGHT=17 align="absmiddle"></P>
<P><img src="Images/Phys1/XLAD741.gif" WIDTH=161 HEIGHT=44 align="absmiddle"></P>
<P>Angular momentum <img src="Images/Phys1/XLAD742.gif" WIDTH=28 HEIGHT=17 align="absmiddle"></P>
<P><img src="Images/Phys1/XLAD743.gif" WIDTH=142 HEIGHT=22 align="absmiddle"></P>
</FONT>]]></ans_desc>
              </content>
              <content id= "11">
                            <quest><![CDATA[<FONT FACE="Arial">The dimension of Planck’s constant is</FONT>]]></quest>
                            <opt1><![CDATA[<FONT FACE="Arial"><img src="Images/Phys1/XLA750.gif" WIDTH=48 HEIGHT=18 align="absmiddle"></FONT>]]></opt1>
                            <opt2><![CDATA[<FONT FACE="Arial"><img src="Images/Phys1/XLB750.gif" WIDTH=49 HEIGHT=17 align="absmiddle"></FONT>]]></opt2>
                            <opt3><![CDATA[<FONT FACE="Arial"><img src="Images/Phys1/XLC750.gif" WIDTH=53 HEIGHT=18 align="absmiddle"></FONT>]]></opt3>
                            <opt4><![CDATA[<FONT FACE="Arial"><img src="Images/Phys1/XLD750.gif" WIDTH=64 HEIGHT=18 align="absmiddle"></FONT>]]></opt4>
                            <ans><![CDATA[a]]></ans>
                            <ans_desc><![CDATA[<FONT FACE="Arial"><P>We know that E=hv</P>
<P><img src="Images/Phys1/XLAD750.gif" WIDTH=189 HEIGHT=22 align="absmiddle"></P>
<P><img src="Images/Phys1/XLAD751.gif" WIDTH=66 HEIGHT=22 align="absmiddle"></P>
</FONT>]]></ans_desc>
              </content>
              <content id= "12">
                            <quest><![CDATA[<FONT FACE="Arial">Dimension of torque is </FONT>]]></quest>
                            <opt1><![CDATA[<FONT FACE="Arial"><img src="Images/Phys1/XLA760.gif" WIDTH=48 HEIGHT=18 align="absmiddle"></FONT>]]></opt1>
                            <opt2><![CDATA[<FONT FACE="Arial"><img src="Images/Phys1/XLB760.gif" WIDTH=45 HEIGHT=18 align="absmiddle"></FONT>]]></opt2>
                            <opt3><![CDATA[<FONT FACE="Arial"><img src="Images/Phys1/XLC760.gif" WIDTH=50 HEIGHT=18 align="absmiddle"></FONT>]]></opt3>
                            <opt4><![CDATA[<FONT FACE="Arial"><img src="Images/Phys1/XLD760.gif" WIDTH=44 HEIGHT=18 align="absmiddle"></FONT>]]></opt4>
                            <ans><![CDATA[c]]></ans>
                            <ans_desc><![CDATA[<FONT FACE="Arial"><P>Torque = force <img src="Images/Phys1/XLAD760.gif" WIDTH=12 HEIGHT=13 align="absmiddle"> 
  distance</P>
<P><img src="Images/Phys1/XLAD761.gif" WIDTH=80 HEIGHT=22 align="absmiddle"></P>
<P><img src="Images/Phys1/XLAD762.gif" WIDTH=69 HEIGHT=22 align="absmiddle"></P>
</FONT>]]></ans_desc>
              </content>
              <content id= "13">
                            <quest><![CDATA[<FONT FACE="Arial">The dimensions of angular velocity is</FONT>]]></quest>
                            <opt1><![CDATA[<FONT FACE="Arial"><img src="Images/Phys1/XLA770.gif" WIDTH=45 HEIGHT=18 align="absmiddle"></FONT>]]></opt1>
                            <opt2><![CDATA[<FONT FACE="Arial"><img src="Images/Phys1/XLB770.gif" WIDTH=57 HEIGHT=18 align="absmiddle"></FONT>]]></opt2>
                            <opt3><![CDATA[<FONT FACE="Arial"><img src="Images/Phys1/XLC770.gif" WIDTH=57 HEIGHT=18 align="absmiddle"></FONT>]]></opt3>
                            <opt4><![CDATA[<FONT FACE="Arial"><img src="Images/Phys1/XLD770.gif" WIDTH=50 HEIGHT=18 align="absmiddle"></FONT>c]]></opt4>
                            <ans><![CDATA[c]]></ans>
                            <ans_desc><![CDATA[<FONT FACE="Arial"><P><img src="Images/Phys1/XLAD770.gif" WIDTH=168 HEIGHT=36 align="absmiddle"></P>
<P><img src="Images/Phys1/XLAD771.gif" WIDTH=86 HEIGHT=38 align="absmiddle"></P>
<P><img src="Images/Phys1/XLAD772.gif" WIDTH=124 HEIGHT=22 align="absmiddle"></P>
</FONT>]]></ans_desc>
              </content>
              <content id= "14">
                            <quest><![CDATA[<FONT FACE="Arial">If <img src="Images/Phys1/XLQ780.gif" WIDTH=70 HEIGHT=18 align="absmiddle"> 
  <FONT FACE="Arial">were chosen as fundamental units of force, velocity and time 
  respectively, the dimensions of mass would be represented as </FONT></FONT>]]></quest>
                            <opt1><![CDATA[<FONT FACE="Arial"><img src="Images/Phys1/XLA780.gif" WIDTH=36 HEIGHT=16 align="absmiddle"></FONT>]]></opt1>
                            <opt2><![CDATA[<FONT FACE="Arial"><img src="Images/Phys1/XLB780.gif" WIDTH=44 HEIGHT=18 align="absmiddle"></FONT>]]></opt2>
                            <opt3><![CDATA[<FONT FACE="Arial"><img src="Images/Phys1/XLC780.gif" WIDTH=45 HEIGHT=18 align="absmiddle"></FONT>]]></opt3>
                            <opt4><![CDATA[<FONT FACE="Arial"><img src="Images/Phys1/XLD780.gif" WIDTH=54 HEIGHT=18 align="absmiddle"></FONT>]]></opt4>
                            <ans><![CDATA[c]]></ans>
                            <ans_desc><![CDATA[<FONT FACE="Arial"><P>We know that Force = mass <img src="Images/Phys1/XLAD780.gif" WIDTH=12 HEIGHT=13 align="absmiddle"> 
  acceleration</P>
<P><img src="Images/Phys1/XLAD781.gif" WIDTH=266 HEIGHT=38 align="absmiddle"></P>
<P><img src="Images/Phys1/XLAD782.gif" WIDTH=100 HEIGHT=38 align="absmiddle"></P>
</FONT>]]></ans_desc>
              </content>
              <content id= "15">
                            <quest><![CDATA[<FONT FACE="Arial">If energy E, velocity V and time T are taken as the fundamental units, what 
  is the dimensional formula for energy per unit area?</FONT>]]></quest>
                            <opt1><![CDATA[<FONT FACE="Arial">E V T</FONT>]]></opt1>
                            <opt2><![CDATA[<FONT FACE="Arial"><img src="Images/Phys1/XLB790.gif" WIDTH=54 HEIGHT=18 align="absmiddle"></FONT>]]></opt2>
                            <opt3><![CDATA[<FONT FACE="Arial"><img src="Images/Phys1/XLC790.gif" WIDTH=57 HEIGHT=18 align="absmiddle"></FONT>]]></opt3>
                            <opt4><![CDATA[<FONT FACE="Arial"><img src="Images/Phys1/XLD790.gif" WIDTH=56 HEIGHT=18 align="absmiddle"></FONT>]]></opt4>
                            <ans><![CDATA[c]]></ans>
                            <ans_desc><![CDATA[<FONT FACE="Arial"><P><img src="Images/Phys1/XLAD790.gif" WIDTH=81 HEIGHT=36 align="absmiddle"> 
  Here a= 1</P>
<P>Now <img src="Images/Phys1/XLAD791.gif" WIDTH=65 HEIGHT=36 align="absmiddle"></P>
<P>Or    <img src="Images/Phys1/XLAD792.gif" WIDTH=114 HEIGHT=22 align="absmiddle"></P>
<P>  <img src="Images/Phys1/XLAD793.gif" WIDTH=68 HEIGHT=22 align="absmiddle"></P>
<P>This gives <img src="Images/Phys1/XLAD794.gif" WIDTH=133 HEIGHT=17 align="absmiddle"></P>
<P>So,       c= -2</P>
<P><img src="Images/Phys1/XLAD795.gif" WIDTH=132 HEIGHT=41 align="absmiddle"></P>
</FONT>]]></ans_desc>
              </content>
              <content id= "16">
                            <quest><![CDATA[<FONT FACE="Arial">If the volocity of light c, universal gravitational constant G and Planck’s 
  constant h be taken as the fundamental units, then the dimentional formula for 
  mass is.</FONT>]]></quest>
                            <opt1><![CDATA[<FONT FACE="Arial"><img src="Images/Phys1/XLA800.gif" WIDTH=54 HEIGHT=25 align="absmiddle"></FONT>]]></opt1>
                            <opt2><![CDATA[<FONT FACE="Arial"><img src="Images/Phys1/XLB800.gif" WIDTH=54 HEIGHT=25 align="absmiddle"></FONT>]]></opt2>
                            <opt3><![CDATA[<FONT FACE="Arial"><img src="Images/Phys1/XLC800.gif" WIDTH=54 HEIGHT=25 align="absmiddle"></FONT>]]></opt3>
                            <opt4><![CDATA[<FONT FACE="Arial"><img src="Images/Phys1/XLD800.gif" WIDTH=44 HEIGHT=22 align="absmiddle"></FONT>]]></opt4>
                            <ans><![CDATA[a]]></ans>
                            <ans_desc><![CDATA[<FONT FACE="Arial"><P>Let <img src="Images/Phys1/XLAD800.gif" WIDTH=74 HEIGHT=20 align="absmiddle"></P>
<P>  <img src="Images/Phys1/XLAD801.gif" WIDTH=229 HEIGHT=22 align="absmiddle"></P>
<P>  <img src="Images/Phys1/XLAD802.gif" WIDTH=168 HEIGHT=21 align="absmiddle"></P>
<P>So,   <img src="Images/Phys1/XLAD803.gif" WIDTH=145 HEIGHT=18 align="absmiddle"></P>
<P>And   <img src="Images/Phys1/XLAD804.gif" WIDTH=88 HEIGHT=17 align="absmiddle"></P>
<P>Solving, we get <img src="Images/Phys1/XLAD805.gif" WIDTH=140 HEIGHT=36 align="absmiddle"></P>
<P>      <img src="Images/Phys1/XLAD806.gif" WIDTH=110 HEIGHT=26 align="absmiddle"></P>
</FONT>]]></ans_desc>
              </content>
              <content id= "17">
                            <quest><![CDATA[<FONT FACE="Arial">A quantity X multiplied by time gives angular momentum. Then dimensional 
  formula of X is</FONT>]]></quest>
                            <opt1><![CDATA[<FONT FACE="Arial"><img src="Images/Phys1/XLA810.gif" WIDTH=50 HEIGHT=18 align="absmiddle"></FONT>]]></opt1>
                            <opt2><![CDATA[<FONT FACE="Arial"><img src="Images/Phys1/XLB810.gif" WIDTH=29 HEIGHT=18 align="absmiddle"></FONT>]]></opt2>
                            <opt3><![CDATA[<FONT FACE="Arial"><img src="Images/Phys1/XLC810.gif" WIDTH=50 HEIGHT=18 align="absmiddle"></FONT>]]></opt3>
                            <opt4><![CDATA[<FONT FACE="Arial"><img src="Images/Phys1/XLD810.gif" WIDTH=49 HEIGHT=18 align="absmiddle"></FONT>]]></opt4>
                            <ans><![CDATA[a]]></ans>
                            <ans_desc><![CDATA[<FONT FACE="Arial"><P>Angular momentum = m v r</P>
<P><img src="Images/Phys1/XLAD810.gif" WIDTH=14 HEIGHT=13 align="absmiddle"> 
  dimensions of angular momentum</P>
<P><img src="Images/Phys1/XLAD811.gif" WIDTH=140 HEIGHT=22 align="absmiddle"></P>
<P><img src="Images/Phys1/XLAD812.gif" WIDTH=205 HEIGHT=22 align="absmiddle"></P>
<P><img src="Images/Phys1/XLAD813.gif" WIDTH=196 HEIGHT=22 align="absmiddle"></P>
</FONT>]]></ans_desc>
              </content>
              <content id= "18">
                            <quest><![CDATA[<FONT FACE="Arial">What is the dimensional fromula of <img src="Images/Phys1/XLQ820.gif" WIDTH=29 HEIGHT=20 align="absmiddle"> 
  where the letters have their their usual meanings</FONT>]]></quest>
                            <opt1><![CDATA[<FONT FACE="Arial"><img src="Images/Phys1/XLA820.gif" WIDTH=54 HEIGHT=21 align="absmiddle"></FONT>]]></opt1>
                            <opt2><![CDATA[<FONT FACE="Arial"><img src="Images/Phys1/XLB820.gif" WIDTH=54 HEIGHT=21 align="absmiddle"></FONT>]]></opt2>
                            <opt3><![CDATA[<FONT FACE="Arial"><img src="Images/Phys1/XLC820.gif" WIDTH=57 HEIGHT=21 align="absmiddle"></FONT>]]></opt3>
                            <opt4><![CDATA[<FONT FACE="Arial"><img src="Images/Phys1/XLD820.gif" WIDTH=66 HEIGHT=21 align="absmiddle"></FONT>]]></opt4>
                            <ans><![CDATA[c]]></ans>
                            <ans_desc><![CDATA[<FONT FACE="Arial"><P><img src="Images/Phys1/XLAD820.gif" WIDTH=150 HEIGHT=22 align="absmiddle"></P>
<P><img src="Images/Phys1/XLAD821.gif" WIDTH=138 HEIGHT=22 align="absmiddle"></P>
</FONT>]]></ans_desc>
              </content>
              <content id= "19">
                            <quest><![CDATA[<FONT FACE="Arial">Given that <img src="Images/Phys1/XLQ830.gif" WIDTH=68 HEIGHT=20 align="absmiddle"> 
  , where F denotes force and t time, then the dimensions of a and b are respectively.</FONT>]]></quest>
                            <opt1><![CDATA[<FONT FACE="Arial"><img src="Images/Phys1/XLA830.gif" WIDTH=101 HEIGHT=22 align="absmiddle"></FONT>]]></opt1>
                            <opt2><![CDATA[<FONT FACE="Arial"><img src="Images/Phys1/XLB830.gif" WIDTH=62 HEIGHT=20 align="absmiddle"></FONT>]]></opt2>
                            <opt3><![CDATA[<FONT FACE="Arial"><img src="Images/Phys1/XLC830.gif" WIDTH=85 HEIGHT=20 align="absmiddle"></FONT>]]></opt3>
                            <opt4><![CDATA[<FONT FACE="Arial"><img src="Images/Phys1/XLD830.gif" WIDTH=129 HEIGHT=20 align="absmiddle"></FONT>]]></opt4>
                            <ans><![CDATA[d]]></ans>
                            <ans_desc><![CDATA[<FONT FACE="Arial"><P><img src="Images/Phys1/XLAD830.gif" WIDTH=74 HEIGHT=20 align="absmiddle"></P>
<P><img src="Images/Phys1/XLAD831.gif" WIDTH=198 HEIGHT=41 align="absmiddle"></P>
<P><img src="Images/Phys1/XLAD832.gif" WIDTH=178 HEIGHT=42 align="absmiddle"></P>
</FONT>]]></ans_desc>
              </content>
              <content id= "20">
                            <quest><![CDATA[<FONT FACE="Arial">If K represents kinetic energy, V velocity and T time and these are chosed as the fundamental units then , the 
  unit of surface tension will be</FONT>]]></quest>
                            <opt1><![CDATA[<FONT FACE="Arial"><img src="Images/Phys1/XLA840.gif" WIDTH=56 HEIGHT=18 align="absmiddle"></FONT>]]></opt1>
                            <opt2><![CDATA[<FONT FACE="Arial"><img src="Images/Phys1/XLB840.gif" WIDTH=58 HEIGHT=18 align="absmiddle"></FONT>]]></opt2>
                            <opt3><![CDATA[<FONT FACE="Arial"><img src="Images/Phys1/XLC840.gif" WIDTH=62 HEIGHT=18 align="absmiddle"></FONT>]]></opt3>
                            <opt4><![CDATA[<FONT FACE="Arial"><img src="Images/Phys1/XLD840.gif" WIDTH=58 HEIGHT=18 align="absmiddle"></FONT>]]></opt4>
                            <ans><![CDATA[a]]></ans>
                            <ans_desc><![CDATA[<FONT FACE="Arial"><P><img src="Images/Phys1/XLAD840.gif" WIDTH=157 HEIGHT=22 align="absmiddle"></P>
<P><img src="Images/Phys1/XLAD841.gif" WIDTH=312 HEIGHT=44 align="absmiddle"></P>
<P><img src="Images/Phys1/XLAD842.gif" WIDTH=160 HEIGHT=44 align="absmiddle"></P>
<P><img src="Images/Phys1/XLAD843.gif" WIDTH=74 HEIGHT=22 align="absmiddle"></P>
</FONT>]]></ans_desc>
              </content>
</dataroot>
XML;

$data = new SimpleXMLElement($xml,LIBXML_NOCDATA);
$array = json_decode(json_encode($data),true);
print_r($array);

?>
0

<content id= "1">
<quest><![CDATA[<FONT FACE="Arial">Which of the following is not the measure of a physical quantity?</FONT>]]></quest>
<opt1><![CDATA[<FONT FACE="Arial">kilogram</FONT>]]></opt1>
<opt2><![CDATA[<FONT FACE="Arial">impulse</FONT>]]></opt2>
<opt3><![CDATA[<FONT FACE="Arial">energy</FONT>]]></opt3>
<opt4><![CDATA[<FONT FACE="Arial">density</FONT>]]></opt4>
<ans><![CDATA[a]]></ans>
<ans_desc><![CDATA[<FONT FACE="Arial">kilogram is the name of the fundamental unit of mass</FONT>]]></ans_desc>
</content>

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