3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php class Foo { const bar = 0; public function bar() { echo 1;} } call_user_func(Foo::bar);
Output for 5.3.0 - 5.6.28, 7.0.0 - 7.1.0
Warning: call_user_func() expects parameter 1 to be a valid callback, no array or string given in /in/goR8l on line 9
Output for hhvm-3.10.0 - 3.12.0
Warning: Invalid argument: function: not string, closure, or array in /in/goR8l on line 9
Output for 5.2.3 - 5.2.17
Warning: call_user_func(0): First argument is expected to be a valid callback in /in/goR8l on line 9
Output for 5.0.0 - 5.2.2
<br /> <b>Warning</b>: call_user_func(0) [<a href='function.call-user-func'>function.call-user-func</a>]: First argument is expected to be a valid callback in <b>/in/goR8l</b> on line <b>9</b><br />
Output for 4.4.2 - 4.4.9
<br /> <b>Parse error</b>: syntax error, unexpected T_CONST, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in <b>/in/goR8l</b> on line <b>4</b><br />
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.4.1
<br /> <b>Parse error</b>: parse error, unexpected T_CONST, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in <b>/in/goR8l</b> on line <b>4</b><br />
Process exited with code 255.
Output for 4.3.2 - 4.3.4
<br /> <b>Parse error</b>: parse error, expecting `T_OLD_FUNCTION' or `T_FUNCTION' or `T_VAR' or `'}'' in <b>/in/goR8l</b> on line <b>4</b><br />
Process exited with code 255.