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<?php class Base { protected $quadrat; public function getQuadrat() { echo is_callable($this->quadrat) ? 'Yes' : 'No'; echo "\n"; return $this->quadrat; } } class Test extends Base { public function malzwei($n) { return $n * 2; } public function quadrat($n) { return $n * $n; } } $t = new Test(); echo call_user_func($t->getQuadrat(), 3); var_dump(array_map($t->getQuadrat(), array(1, 2, 3, 4)));
Output for 8.0.10 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
No Fatal error: Uncaught TypeError: call_user_func(): Argument #1 ($callback) must be a valid callback, no array or string given in /in/737dH:12 Stack trace: #0 {main} thrown in /in/737dH on line 12
Process exited with code 255.
Output for 8.0.0 - 8.0.9
No Fatal error: Uncaught TypeError: call_user_func(): Argument #1 ($function) must be a valid callback, no array or string given in /in/737dH:12 Stack trace: #0 {main} thrown in /in/737dH on line 12
Process exited with code 255.
Output for 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.8 - 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
No Warning: call_user_func() expects parameter 1 to be a valid callback, no array or string given in /in/737dH on line 12 No array(4) { [0]=> int(1) [1]=> int(2) [2]=> int(3) [3]=> int(4) }
Output for 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17
No Warning: call_user_func(): First argument is expected to be a valid callback in /in/737dH on line 12 No array(4) { [0]=> int(1) [1]=> int(2) [2]=> int(3) [3]=> int(4) }
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/737dH on line 3
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/737dH on line 3
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/737dH on line 3
Process exited with code 255.
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