Variables in Variables

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Views: 443 | Replies: 8 | Solved

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Join Date: Dec 2007

Posts: 355

Reputation: OmniX is an unknown quantity at this point

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OmniX

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Posting Whiz

Variables in Variables

May 9th, 2008

I have a variable in a variable.

I have done this before but it is not working this time.

I have it in a for loop so my code is:

 Help with Code Tags 
 php Syntax (Toggle Plain Text) 
 $abc1 = one;
 $abc2 = two;
 for($i = 0; $i < 2; $i++) {
  echo $$abc$i;  
 }
 $abc1 = one;
 $abc2 = two;
 for($i = 0; $i < 2; $i++) {
  echo $$abc$i;  
 }

The out come should be "one two", correct?

The concept is correct? The code is correct? - to the best of my knowledge and references.

Any ideas? Thanks, Regards X.

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Join Date: May 2008

Location: Swindon, UK

Posts: 117

Reputation: xan is an unknown quantity at this point

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xan

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Junior Poster

Re: Variables in Variables

May 9th, 2008

The best way to do this would probably be an array:

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(Toggle Plain Text)

$abc=array("value1","value2");

for($i = 0; $i < 2; $i++) {
echo $abc[$i];
}

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Join Date: Dec 2007

Posts: 355

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OmniX

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Posting Whiz

Re: Variables in Variables

May 9th, 2008

Ya true xan but due to many reasons I cant (mysql - retrieving rows then calculations).

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Join Date: May 2008

Location: Swindon, UK

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xan

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Junior Poster

Re: Variables in Variables

May 9th, 2008

Not sure exactly how variable variables work, but the PHP manual about them is here

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Join Date: Dec 2007

Posts: 355

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OmniX

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Posting Whiz

Re: Variables in Variables

May 11th, 2008

So can anyone help me fix my code please?

Last edited by OmniX : May 11th, 2008 at 8:54 pm.

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Join Date: Nov 2007

Location: Bangalore, India

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nav33n

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Posting Sensei

Re: Variables in Variables

May 15th, 2008

•

Originally Posted by OmniX

I have a variable in a variable.

I have done this before but it is not working this time.

I have it in a for loop so my code is:
Help with Code Tags

php Syntax (Toggle Plain Text)
 $abc1 = one;
 $abc2 = two;
 for($i = 0; $i < 2; $i++) {
  echo $$abc$i;  
 }
$abc1 = one; $abc2 = two; for($i = 0; $i < 2; $i++) { echo $$abc$i; }
The out come should be "one two", correct?

The concept is correct? The code is correct? - to the best of my knowledge and references.

Any ideas? Thanks, Regards X.

The output will not be one two because $abc1 is one and not $abc0. Try this.

 Help with Code Tags 
 php Syntax (Toggle Plain Text) 
<?php 
$abc1 = "one";
 $abc2 = "two";
 for($i = 1; $i <= 2; $i++) {
  echo ${abc.$i}; //value of $i will be concatenated to string abc and then it will consider the whole as a variable  
 }
 ?>
<?php 
$abc1 = "one";
 $abc2 = "two";
 for($i = 1; $i <= 2; $i++) {
  echo ${abc.$i}; //value of $i will be concatenated to string abc and then it will consider the whole as a variable  
 }
 ?>

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Join Date: Dec 2007

Posts: 355

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OmniX

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Posting Whiz

Re: Variables in Variables

May 15th, 2008

Been really busy with this week with work, wont be able to test this until the weekend or next weekend. But if your 120% this will work ill mark this solved and give you credit and test it later.

Last edited by OmniX : May 15th, 2008 at 9:13 am.