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<?php class Foo { public function foo() { echo(__METHOD__); } public static function bar() { echo (__METHOD__); } } $foo = new Foo; $result = []; var_dump(is_callable(['Foo', 'foo'], 0, $result[0]));//false var_dump(is_callable(['Foo', 'bar'], 0, $result[1]));//true var_dump(is_callable([$foo, 'foo'], 0, $result[2]));//true var_dump(is_callable([$foo, 'bar'], 0, $result[3]));//true array_map('call_user_func', $result);
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
bool(false) bool(true) bool(true) bool(true) Fatal error: Uncaught TypeError: call_user_func(): Argument #1 ($callback) must be a valid callback, non-static method Foo::foo() cannot be called statically in /in/nB4m7:14 Stack trace: #0 [internal function]: call_user_func('Foo::foo') #1 /in/nB4m7(14): array_map('call_user_func', Array) #2 {main} thrown in /in/nB4m7 on line 14
Process exited with code 255.
Output for 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.31, 7.4.0 - 7.4.25, 7.4.27 - 7.4.33
Deprecated: Methods with the same name as their class will not be constructors in a future version of PHP; Foo has a deprecated constructor in /in/nB4m7 on line 3 Foo::foobool(false) bool(true) bool(true) bool(true) Warning: call_user_func() expects parameter 1 to be a valid callback, non-static method Foo::foo() cannot be called statically in /in/nB4m7 on line 14 Foo::bar Warning: call_user_func() expects parameter 1 to be a valid callback, non-static method Foo::foo() cannot be called statically in /in/nB4m7 on line 14 Foo::bar
Output for 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.3.32 - 7.3.33, 7.4.26
Foo::foobool(false) bool(true) bool(true) bool(true) Warning: call_user_func() expects parameter 1 to be a valid callback, non-static method Foo::foo() cannot be called statically in /in/nB4m7 on line 14 Foo::bar Warning: call_user_func() expects parameter 1 to be a valid callback, non-static method Foo::foo() cannot be called statically in /in/nB4m7 on line 14 Foo::bar
Output for 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29
Parse error: syntax error, unexpected '[' in /in/nB4m7 on line 9
Process exited with code 255.
Output for 5.0.0 - 5.0.5
Parse error: parse error, unexpected '[' in /in/nB4m7 on line 9
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/nB4m7 on line 5
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 T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /in/nB4m7 on line 5
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/nB4m7 on line 5
Process exited with code 255.
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