<?php
// Everything you enter here will be executed by our servers. Try it!
$newfunc = create_function('$a,$b', 'return "ln($a) + ln($b) = " . log($a * $b);');
var_dump($newfunc);
Fatal error: Uncaught Error: Call to undefined function create_function() in /in/v3Bt3:4
Stack trace:
#0 {main}
thrown in /in/v3Bt3 on line 4
Process exited with code 255.