3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $array = array( array( "name" => "a", "code" => "416", "id" => "a1" ), array( "name" => "a", "code" => "522", "id" => "a2" ), array( "name" => "b", "code" => "580", "id" => "b1" ) ); $counts = array_count_values( array_map(function (array $entry) { return $entry['name']; }, $array) // or array_column($array, 'name') in PHP 5.5+ ); $uniqueNames = array_keys( array_filter($counts, function ($count) { return $count == 1; }) ); $result = array_filter($array, function (array $entry) use ($uniqueNames) { return in_array($entry['name'], $uniqueNames); }); $codes = array ("code"); //var_dump(array_intersect_key($result,array_flip($codes))); var_dump($codes);
based on vdiLK
Output for 5.3.0 - 7.2.0
array(1) { [0]=> string(4) "code" }
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.2.17
Parse error: syntax error, unexpected T_FUNCTION, expecting ')' in /in/TGPAf on line 22
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.4.1, 5.0.0 - 5.0.5
Parse error: parse error, unexpected T_FUNCTION, expecting ')' in /in/TGPAf on line 22
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `')'' in /in/TGPAf on line 22
Process exited with code 255.