kylegetson
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89 posts since Sep 2009
Reputation Points: 26
Solved Threads: 12
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Search from text box and saving to txt file
Hi good day. i am designing a little project for school. This project is to register the MAC address of the laptops of every student in the school.
My problem is, when i put in the student's MAC address in the textbox, i would like the little search algorithm i got to revise the text file to see if the MAC address is already registered.
I am facing problems with the textbox content to do the search.
Contains two files : getdata.php
<?php
$hoy=date("d-m-y");
?>
<html>
<head>
<meta http-equiv="content-type" content="text/html; charset=windows-1250">
<meta name="generator" content="PSPad editor, www.pspad.com">
<title> Register MAC </title>
</head>
<body bgcolor="#ffffff">
<form action="savedata.php" method="post">
<table class="fd">
<tr><td>Identification No.: <input type="text" name="ncontrol" MAXLENGTH ="8" size="30"></td></tr>
<tr><td>MAC Address:<input type="text" name="mac1" size = "1" MAXLENGTH="2" class="macs">:
<input type="text" name="mac2" size = "1" MAXLENGTH="2" class="macs">:
<input type="text" name="mac3" size = "1" MAXLENGTH="2" class="macs">:
<input type="text" name="mac4" size = "1" MAXLENGTH="2" class="macs">:
<input type="text" name="mac5" size = "1" MAXLENGTH="2" class="macs">:
<input type="text" name="mac6" size = "1" MAXLENGTH="2" class="macs"></td>
</tr>
<tr><td>Date Registered: <?php echo "<input type='text' name='hoy' id='hoy' value='$hoy'>"; ?></td></tr>
</table>
<input type="submit" value="Save>>">
</form>
</body>
</html>
<?php
?>
and savedata.php
<?php
$Ncontrol = @$_POST["ncontrol"];
$Fdate = @$_POST["hoy"];
$dMAC = @$_POST["mac1"];
$dMAC1 = @$_POST["mac2"];
$dMAC2 = @$_POST["mac3"];
$dMAC3 = @$_POST["mac4"];
$dMAC4 = @$_POST["mac5"];
$dMAC5 = @$_POST["mac6"];
// Set the string to be written to the file
//save numero de control
$values = "$Ncontrol \t\t\t\t\t\t\t\t\t";
//save MAC
$values .= "$dMAC:$dMAC1:$dMAC2:$dMAC3:$dMAC4:$dMAC5 \t\t\t\t";
//save date
$values .= "$Fdate\r\n";
// Open the file for reading and writing
$fp = @fopen("MACS.data", "a+") or die("CANNOT OPEN THE FILE MACS.daTA!");
$numBytes = @fwrite($fp, $values) or die("CANNOT WRITE TO THE FILE!");
$people = file("MACS.data");
//THE SEARCH ALGORITHM. TO REVISE IF THE MAC ADDRESS IS ALREADY IN THE TEXTFILE
for ($posn=0; $posn < count($people); $posn++)
if (ereg("PHP",$people[$posn])) {
print ("Person $posn is $people[$posn]");
}
}
@fclose($fp);
?>
.
I am using the MAC.data to save the results (as a txt file)
hi, i am not using a database because with the MAC address, i will be working with a proxy server(squid) to validate the MAC addresses so that every person can nagvigate automatically once registered. That's the reason why i am using the text file.
Ok. i can use one of the fuctions u told me about but how can i link the text in the textbox to the functions? How can i assign the text given as a variable for use of the function??
before you write the file (your fwrite statement) but after you open the file for readhing and writing try this:
$filecontents = fread($fp, filesize("MACS.data"));
if(strpos($filecontents,"$dMAC:$dMAC1:$dMAC2:$dMAC3:$dMAC4:$dMAC5") === FALSE){
//store this MAC address, it's unique
}else{
//you already have this one
}notice the 3 equal signs. that's intentional. strpos() will return 0 (int) if the string your searching for starts at the first position in the string, 2 equal signs like ==false will cause a false positive, because 0==false is true, however 0===false is not.
kylegetson
Junior Poster in Training
89 posts since Sep 2009
Reputation Points: 26
Solved Threads: 12
ok. that worked perfectly. thanks a lot.
I got another question. i am now trying to go back to getdata.php if the MAC address already exists. how can i do that?
<?php
$Ncontrol = @$_POST["ncontrol"];
$Fdate = @$_POST["hoy"];
$dMAC = @$_POST["mac1"];
$dMAC1 = @$_POST["mac2"];
$dMAC2 = @$_POST["mac3"];
$dMAC3 = @$_POST["mac4"];
$dMAC4 = @$_POST["mac5"];
$dMAC5 = @$_POST["mac6"];
// Set the string to be written to the file
//save numero de control
$values = "$Ncontrol \t\t\t\t\t\t\t\t\t";
//save MAC
$values .= "$dMAC:$dMAC1:$dMAC2:$dMAC3:$dMAC4:$dMAC5 \t\t\t\t";
//save date
$values .= "$Fdate\r\n";
/*
if ( (!$Ncontrol)||(!$Fdate)||(!$dMAC) ||(!$dMAC1)||(!$dMAC2)||(!$dMAC3)||(!$dMAC4)||(!$dMAC5)){
echo "Revise lo siguiente por favor:<BR>";
if(!$Ncontrol){
echo "Ingrese el Numero de Control Por favor<BR>";
}
if(!$Fdate){
echo "Fecha esta vacio!<BR>";
}
if(!$dMAC){
echo "MAC 1 vacio<BR><BR>";
}
if(!$dMAC1){
echo "MAC 2 vacio<BR><BR>";
}
if(!$dMAC2){
echo "MAC 3 vacio<BR><BR>";
}
if(!$dMAC3){
echo "MAC 5 vacio<BR><BR>";
}
if(!$dMAC4){
echo "MAC 6 vacio<BR><BR>";
}
if(!$dMAC5){
echo "MAC 7 vacio<BR><BR>";
}
}else{ */
// Open the file for reading and writing
$fp = @fopen("MACS.data", "a+") or die("No puede abrir MAC.data para escribir!");
$filecontents = fread($fp,filesize("MACS.data"));
if(strpos($filecontents,"$dMAC:$dMAC1:$dMAC2:$dMAC3:$dMAC4:$dMAC5")===FALSE){
$numBytes = @fwrite($fp, $values) or die("No puede escribir al archivo!");
}else{
echo("<SCRIPT LANGUAGE='JavaScript'>
window.alert('THIS MAC ADDRESS IS ALREADY REGISTERED!!')
</SCRIPT>");
}
/*} */
@fclose($fp);
?>use header(). Make sure you don't have any output on your savedata.php.
header("Location: getdata.php");If you need to pass back a message you could use session variables, or pass information on the query string. like getdata.php?error=duplicate+MAC
kylegetson
Junior Poster in Training
89 posts since Sep 2009
Reputation Points: 26
Solved Threads: 12
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