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run code in 150+ php & hhvm versions
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<?php class mc { public function go(array $arr) { array_walk($arr, array($this, "walkIt")); } private function walkIt($val) { echo $val . "<br />"; } public function export() { return array($this, 'walkIt'); } } $data = array(1,2,3,4); $m = new mc; $m->go($data); array_walk($data, $m->export());
Output for 5.3.0 - 7.1.0
1<br />2<br />3<br />4<br /> Warning: array_walk() expects parameter 2 to be a valid callback, cannot access private method mc::walkIt() in /in/tfh7f on line 22
Output for 5.1.0 - 5.2.17
1<br />2<br />3<br />4<br /> Fatal error: Call to private method mc::walkIt() from context '' in /in/tfh7f on line 22
Process exited with code 255.
Output for 5.0.0 - 5.0.5
Parse error: parse error, unexpected T_ARRAY, expecting '&' or T_VARIABLE in /in/tfh7f on line 4
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/tfh7f on line 4
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/tfh7f on line 4
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/tfh7f on line 4
Process exited with code 255.