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run code in 150+ php & hhvm versions
Bugs & Features
<?php class NameObj { public $name; function __construct($name){ $this->name = $name; } } class IdObj{ public $id; function __construct($id){ $this->id = $id; } } $idArray = array( new IdObj(1), new IdObj(2), new IdObj(3) ); $nameArray = array( new NameObj('1 - Object 1 Name'), new NameObj('2 - Object 2 Name') ); function custom_diff($oId, $oName) { $one = $oId instanceof IdObj?$oId->id:explode(' - ', $oId->name)[0]; $two = $oName instanceof NameObj?explode(' - ', $oName->name)[0]:$oName->id; return $one-$two; } $missing_objects = array_udiff($idArray, $nameArray, 'custom_diff'); print_r($missing_objects);
Output for 5.4.0 - 7.1.0
Array ( [2] => IdObj Object ( [id] => 3 ) )
Output for 5.1.0 - 5.3.29
Parse error: syntax error, unexpected '[' in /in/n694Z on line 35
Process exited with code 255.
Output for 5.0.0 - 5.0.5
Parse error: parse error, unexpected '[' in /in/n694Z on line 35
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/n694Z on line 5
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/n694Z on line 5
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/n694Z on line 5
Process exited with code 255.