3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php function f(&a) {} function &g($a) { $v = $a; return $v; } f(g(3));
Output for 5.4.0 - 5.5.3
Parse error: syntax error, unexpected 'a' (T_STRING), expecting variable (T_VARIABLE) in /in/4bddU on line 2
Process exited with code 255.
Output for 5.3.0 - 5.3.27
Parse error: syntax error, unexpected T_STRING, expecting T_VARIABLE in /in/4bddU on line 2
Process exited with code 255.