3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $a = 0; $b = 0; $c = 0; function foo(&$v) { $v = $v + 1; } ++$a; foo($a); var_dump($a); foo(++$b); var_dump($b); $b =& ++$c; var_dump($c);
based on ocoX1
Output for 5.4.0 - 5.4.34
Parse error: syntax error, unexpected '++' (T_INC) in /in/WZM5m on line 17
Process exited with code 255.
Output for 5.3.0 - 5.3.29
Parse error: syntax error, unexpected T_INC in /in/WZM5m on line 17
Process exited with code 255.
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.2.17
Parse error: syntax error, unexpected T_INC, expecting T_NEW or T_STRING or T_VARIABLE or '$' in /in/WZM5m on line 17
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.4.1, 5.0.0 - 5.0.5
Parse error: parse error, unexpected T_INC, expecting T_NEW or T_STRING or T_VARIABLE or '$' in /in/WZM5m on line 17
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `T_NEW' or `T_STRING' or `T_VARIABLE' or `'$'' in /in/WZM5m on line 17
Process exited with code 255.