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run code in 150+ php & hhvm versions
Bugs & Features
<?php class Base { protected $quadrat = null; } class Test extends Base { public function malzwei($n) { return $n * 2; } public function quadrat($n) { return $n * $n; } public function getQuadrat() { echo is_callable($this->quadrat) ? 'Yes' : 'No'; echo "\n"; return $this->quadrat; } } $t = new Test(); $quadrat = $t->getQuadrat(); echo gettype($quadrat); echo call_user_func($quadrat, 3); var_dump(array_map($quadrat, array(1, 2, 3, 4)));
Output for 5.3.0 - 7.1.0
No NULL Warning: call_user_func() expects parameter 1 to be a valid callback, no array or string given in /in/5kIce on line 14 array(4) { [0]=> int(1) [1]=> int(2) [2]=> int(3) [3]=> int(4) }
Output for 5.0.0 - 5.2.17
No NULL Warning: call_user_func(): First argument is expected to be a valid callback in /in/5kIce on line 14 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/5kIce on line 3
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.4.1
Parse error: parse error, unexpected T_STRING, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /in/5kIce 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/5kIce on line 3
Process exited with code 255.