note 126259 added to function.array-search

I needed a function, that returns a value by specifying a keymap to the searched value in a multidimensional array and came up with this. $s is the keymap to the needle and $a the haystack array. <?PHP // search keymap $s in array $a function get_key_in_array($s, $a) { if(is_array($s) && is_array($a[key($s)])) { return get_key_in_array(reset($s), $a[key($s)]); } else { if(is_array($s)) $s = reset($s); return isset($a[$s])?$a[$s]:false; } } // usage examples // ------------------------------ $arr = ['foo'=>['bar'=>['baz'=>77]]]; $s = ['foo'=>['bar'=>'baz']]; var_dump(get_key_in_array($s,$arr)); $s = ['foo'=>['bar'=>['baz']]]; var_dump(get_key_in_array($s,$arr)); $s = ['foo'=>['bar'=>['nix']]]; var_dump(get_key_in_array($s,$arr)); $s = ['foo'=>'bar']; var_dump(get_key_in_array($s,$arr)); $s = ['foo']; var_dump(get_key_in_array($s,$arr)); $s = 'foo'; var_dump(get_key_in_array($s,$arr)); ?> ---- Server IP: 45.112.84.4 Probable Submitter: 45.112.85.242 (proxied: 178.114.170.85) ---- Manual Page -- https://php.net/manual/en/function.array-search.php Edit -- https://main.php.net/note/edit/126259 Del: integrated -- https://main.php.net/note/delete/126259/integrated Del: useless -- https://main.php.net/note/delete/126259/useless Del: bad code -- https://main.php.net/note/delete/126259/bad+code Del: spam -- https://main.php.net/note/delete/126259/spam Del: non-english -- https://main.php.net/note/delete/126259/non-english Del: in docs -- https://main.php.net/note/delete/126259/in+docs Del: other reasons-- https://main.php.net/note/delete/126259 Reject -- https://main.php.net/note/reject/126259 Search -- https://main.php.net/manage/user-notes.php