3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php class C { public static function f() { echo __METHOD__, "\n"; } } $call = 'C::f'; echo 'cuf:', "\n"; call_user_func($call); echo 'invoke:', "\n"; $call();
Output for hhvm-3.12.0, 7.0.0 - 7.1.0
cuf: C::f invoke: C::f
Output for hhvm-3.10.0

Process exited with code 153.
Output for 5.2.2 - 5.6.28
cuf: C::f invoke: Fatal error: Call to undefined function C::f() in /in/S1TW8 on line 12
Process exited with code 255.
Output for 5.1.0 - 5.2.1
cuf: Warning: call_user_func(C::f): Unable to call C::f() in /in/S1TW8 on line 9 invoke: Fatal error: Call to undefined function C::f() in /in/S1TW8 on line 12
Process exited with code 255.
Output for 5.0.0 - 5.0.5
cuf: Warning: call_user_func(C::f): First argument is expected to be a valid callback in /in/S1TW8 on line 9 invoke: Fatal error: Call to undefined function C::f() in /in/S1TW8 on line 12
Process exited with code 255.
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/S1TW8 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 T_STRING, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /in/S1TW8 on line 4
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/S1TW8 on line 4
Process exited with code 255.