PHP - use variable as operator

Question

I am trying to get this:

if($a[2] > $b[2] && $c[2] < 3) echo "bingo";

But because the condition is retrieved from database, I need to get the whole condition into a variable and then somehow find a way to change the variable back into a condition. I thought it will be something along this line:

$condition = "$a[2] > $b[2] && $c[2] < 3";
$evaledCondition = eval("$condition;");
if($evaledCondition) echo "bingo";

Apparently it didn't work. Am I missing something?

Becareful using eval...especially with user supplied data. — Yzmir Ramirez
– Yzmir Ramirez, Commented Jun 10, 2011 at 6:51

Shakti Singh · Accepted Answer · 2011-06-10 06:45:56Z

9

eval() returns NULL unless return is called in the evaluated code

   $evaledCondition = eval("return $condition;");

answered Jun 10, 2011 at 6:45

Shakti Singh

86.7k21 gold badges142 silver badges156 bronze badges

Sign up to request clarification or add additional context in comments.

Collectives™ on Stack Overflow

PHP - use variable as operator

1 Answer 1

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

Comments

Your Answer

Sign up or log in

Post as a guest

Related