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<?php class Foo{ public static function Bar(){ echo 'Bar'; } } function sillyboy(){ echo 'sillyboy'; } function inc(&$p1){ $p1++; } $f = 'Foo::Bar'; $f2 = 'sillyboy'; if (is_callable($f)){ call_user_func($f); } if (is_callable($f2)){ call_user_func($f2); } $num = 3; call_user_func('inc', array(&$num)); echo $num;
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Barsillyboy Warning: inc(): Argument #1 ($p1) must be passed by reference, value given in /in/iVp6P on line 31 Fatal error: Uncaught TypeError: Cannot increment array in /in/iVp6P:15 Stack trace: #0 /in/iVp6P(31): inc(Array) #1 {main} thrown in /in/iVp6P on line 15
Process exited with code 255.
Output for 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33
Barsillyboy Warning: Parameter 1 to inc() expected to be a reference, value given in /in/iVp6P on line 31 3
Output for 5.2.2 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33
Barsillyboy3
Output for 5.1.0 - 5.1.6, 5.2.0 - 5.2.1
Warning: call_user_func(Foo::Bar): Unable to call Foo::Bar() in /in/iVp6P on line 23 sillyboy3
Output for 5.0.3 - 5.0.5
sillyboy3
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/iVp6P on line 4
Process exited with code 255.
Output for 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/iVp6P on line 4
Process exited with code 255.
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