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<?php function foo1() { echo __FUNCTION__, "\n"; } class Foo { function do_foo() { echo __METHOD__, "\n"; } static function static_foo() { echo __METHOD__, "\n"; } } $funs = array( 'foo1', // function array(new Foo(), 'do_foo'), // object method array('Foo', 'static_foo'), // static class method function () { echo __FUNCTION__, "\n"; }, // anonymous function ); foreach ($funs as $fun) { echo "call_user_func(): "; call_user_func($fun); echo "direct call: "; $fun(); }
Output for 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.7 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.20, 7.2.0 - 7.2.33, 7.3.12 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
call_user_func(): foo1 direct call: foo1 call_user_func(): Foo::do_foo direct call: Foo::do_foo call_user_func(): Foo::static_foo direct call: Foo::static_foo call_user_func(): {closure} direct call: {closure}
Output for 5.3.0 - 5.3.29
call_user_func(): foo1 direct call: foo1 call_user_func(): Foo::do_foo direct call: Fatal error: Function name must be a string in /in/X06TU on line 21
Process exited with code 255.
Output for 5.1.0 - 5.1.6, 5.2.0 - 5.2.17
Parse error: syntax error, unexpected T_FUNCTION, expecting ')' in /in/X06TU on line 15
Process exited with code 255.
Output for 5.0.0 - 5.0.5
Parse error: parse error, unexpected T_FUNCTION, expecting ')' in /in/X06TU on line 15
Process exited with code 255.
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected T_STATIC, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /in/X06TU on line 7
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_STATIC, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /in/X06TU on line 7
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/X06TU on line 7
Process exited with code 255.
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