3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $myarr = array("world cup"); foreach($myarr as &$v){ if(strpos($v,'o')!==false) $myarr[] = str_replace('o','O',$v); if(strpos($v,'O')!==false) $myarr[] = str_replace('O','o',$v); } var_export($myarr);
Output for 7.0.0 - 7.1.0
Fatal error: Allowed memory size of 67108864 bytes exhausted (tried to allocate 33554440 bytes) in /in/bBLJT on line 9
Process exited with code 255.
Output for 5.3.0 - 5.6.28
array ( 0 => 'world cup', 1 => 'wOrld cup', )