How to use if condition inside string in php

Question

I want to know if there is a way to use something like this:

$t1=1;
$t2=2;
$t3=\"$t1>$t2\";

if($t3)
   echo \"Greater\";
else
   echo \"Smaller\";


        

Answer 1

Most likely you don't heed that and this question come out from bad design.
Why not to make it just

if ($t1>$t2) echo "greater";

Answer 2

For that, you don't need to evaluate a string. Just write it as a raw condition, and it'll give you a boolean which you can evaluate as is in the if condition:

$t3 = $t1 > $t2;

By the way, the else in your code will evaluate if $t1 and $t2 are equal. You can use an else if to take care of that, but it's just something I thought I'd point out.

Answer 3

This looks like it should work, given the PHP eval page.

$t1=1;
$t2=2;
$t3="return $t1>$t2;";

if(eval($t3))
   echo "Greater";
else
   echo "Smaller";