3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php class foo { public function &__call($foo, $bar) { static $cnt = 0; $cnt++; return $cnt; } } $f = new foo(); $a = $f->bar(); var_dump($a); $a =& $f->bar(); var_dump($a); $a++; $b = $f->bar(); var_dump($b);
Output for hhvm-3.12.0, 7.0.0 - 7.1.0
int(1) int(2) int(4)
Output for hhvm-3.10.0

Process exited with code 153.
Output for 5.0.5 - 5.6.28
int(1) Strict Standards: Only variables should be assigned by reference in /in/Dr2lF on line 12 int(2) int(3)
Output for 5.0.0 - 5.0.4
int(1) int(2) int(3)
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected T_STRING, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /in/Dr2lF on line 3
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.4.1
Parse error: parse error, unexpected T_STRING, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /in/Dr2lF on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `T_OLD_FUNCTION' or `T_FUNCTION' or `T_VAR' or `'}'' in /in/Dr2lF on line 3
Process exited with code 255.