3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php class foo { public function __invoke() {} } function bar(callable $foo) {} var_dump(is_callable(new foo)); bar(new foo);
based on ZgLM3
Output for 5.4.0 - 5.6.28, hhvm-3.12.0, 7.0.0 - 7.1.0
bool(true)
Output for hhvm-3.10.0

Process exited with code 153.
Output for 5.3.0 - 5.3.29
bool(true) Catchable fatal error: Argument 1 passed to bar() must be an instance of callable, instance of foo given, called in /in/nGdsU on line 10 and defined in /in/nGdsU on line 7
Process exited with code 255.
Output for 5.2.0 - 5.2.17
bool(false) Catchable fatal error: Argument 1 passed to bar() must be an instance of callable, instance of foo given, called in /in/nGdsU on line 10 and defined in /in/nGdsU on line 7
Process exited with code 255.
Output for 5.0.0 - 5.1.6
bool(false) Fatal error: Class 'callable' not found in /in/nGdsU on line 7
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/nGdsU 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/nGdsU 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/nGdsU on line 4
Process exited with code 255.