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<?php function foo(callable $fn) { $fn(); } class bar { public static function hello() { echo "Inside static\n"; } } function hello() { echo "Inside function\n"; } foo('hello'); foo('bar::hello');
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.20, 7.2.0 - 7.2.33, 7.3.16 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.19, 8.3.0 - 8.3.7
Inside function Inside static
Output for 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.7 - 5.6.28
Inside function Fatal error: Call to undefined function bar::hello() in /in/gBVPe on line 5
Process exited with code 255.
Output for 5.2.0 - 5.2.17, 5.3.0 - 5.3.29
Catchable fatal error: Argument 1 passed to foo() must be an instance of callable, string given, called in /in/gBVPe on line 23 and defined in /in/gBVPe on line 4
Process exited with code 255.
Output for 5.1.0 - 5.1.6
Fatal error: Argument 1 passed to foo() must be an object of class callable, called in /in/gBVPe on line 23 and defined in /in/gBVPe on line 4
Process exited with code 255.
Output for 5.0.0 - 5.0.5
Fatal error: Argument 1 must be an object of class callable in /in/gBVPe on line 4
Process exited with code 255.
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected T_STRING, expecting ')' in /in/gBVPe on line 4
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.3.11, 4.4.0 - 4.4.1
Parse error: parse error, unexpected T_STRING, expecting ')' in /in/gBVPe on line 4
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `')'' in /in/gBVPe on line 4
Process exited with code 255.
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