Having PHP inside PHP Values

Question

I'm just wondering on how I'd be able to use PHP coding in PHP variables? So for example. I want something like

$Start = " IF($lala == "0"){ echo '";
$End = " '; }";

and to be able to use it as

echo ''.$start.' hello '.End.'';

It may sound weird, but I'd like it to be done in a similar way to this.

Thank you

I guess this will help you: php.net/manual/en/function.eval.php — akasummer
– akasummer, Commented Mar 17, 2016 at 13:00
Why not use a function? What you described is the exact use case for a function. — César
– César, Commented Mar 17, 2016 at 13:10

César · Accepted Answer · 2016-03-17 13:20:00Z

1

I can't even begin to tell you how dangerous executing code from a string is. So don't even think about it...

Instead use a function or a Closure (once you feel somewhat safe with PHP)

<?php
function myFunction($str) {
  $lala = lalaFunction();
  if ($lala) { return $str; }
}

And then just call:

echo myFunction('something');

answered Mar 17, 2016 at 13:20

César

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1 Comment

kojow7 Over a year ago

This is absolutely the way to go! Do NOT use eval ().

mitkosoft · Accepted Answer · 2016-03-17 13:22:54Z

0

Yes, you can by using eval():

<?php
    $lala = 0;
    $Start = "if($lala == '0'){ echo ";
    $End = ";}";
    eval($Start.'hello'.$End);
?>

output:

hello

answered Mar 17, 2016 at 13:22

mitkosoft

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Comments

deceze · Accepted Answer · 2016-03-17 13:35:09Z

0

in that case for if condition you can simply write the code like this:

<?php
$check=0;
$x='true';
$y='false';
$value=$check==0?$y:$x;
?>

in this $check==0 is used for if AND ? is used for the event to run if condition passed is true and : is used for else part.

edited Mar 17, 2016 at 13:35

deceze♦

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answered Mar 17, 2016 at 13:27

Varun Malhotra

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