3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $blah = array('a' => ''); echo isset($blah('a')) +1;
based on QXnsT
Output for 5.0.0 - 5.4.32
Fatal error: Can't use function return value in write context in /in/Bod4i on line 4
Process exited with code 255.
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected '(', expecting ',' or ')' in /in/Bod4i on line 4
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.4.1
Parse error: parse error, unexpected '(', expecting ',' or ')' in /in/Bod4i on line 4
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `','' or `')'' in /in/Bod4i on line 4
Process exited with code 255.