PHP array filtering problem?

How to put an array like this over

["Q"] = = Array (4) {[0] = = Array (one) {["id"] + = string (1) "1", ["k"] = string (1) "Q"} [1] = = Array (one) {["id"] = + string (1) "2", ["k"] + = string (1) "H"} [2] = arr Ay (one) {["id"] + = string (1) "3", ["k"] + = string (1) "V"} [3] = = Array (11) {["          id "] = = string (1)" 4 ", [" k "] = + string (1)" V "}}[" V "] = = Array (4) {[0] = = Array (11) { ["id"] + = string (1) "1", ["k"] = + string (1) "Q"} [1] = = Array (one) {["id"] + = string ( 1) "2", ["k"] + = string (1) "H"} [2] = = Array (one) {["id"] + = string (1) "3", ["k"] = = St        Ring (1) "V"} [3] = = Array (one) {["id"] + = string (1) "4", ["k"] = = string (1) "V"        }}["H"] + = Array (4) {[0] = = Array (one) {["id"] + = string (1) "1", ["k"] = + string (1) "Q" } [1] = arrAy (one) {["id"] + = string (1) "2", ["k"] + = string (1) "H"} [2] = = Array (one) {["ID "] = = string (1)" 3 ", [" k "] + = string (1)" V "} [3] = = Array (one) {[" id "] = = string (1)" 4 ", [" k "] + = string (1)" V "}}

Filter it into this.

["Q"] => array(1) {        [0] => array(11) {          ["id"] => string(1) "1"          ["k"] => string(1) "Q"        }}["V"] => array(2) {        [0] => array(11) {          ["id"] => string(1) "3"          ["k"] => string(1) "V"        }         [1] => array(11) {          ["id"] => string(1) "4"          ["k"] => string(1) "V"        }}["H"] => array(1) {         [0] => array(11) {          ["id"] => string(1) "2"          ["k"] => string(1) "H"        }}

Reply content:

How to put an array like this over

["Q"] = = Array (4) {[0] = = Array (one) {["id"] + = string (1) "1", ["k"] = string (1) "Q"} [1] = = Array (one) {["id"] = + string (1) "2", ["k"] + = string (1) "H"} [2] = arr Ay (one) {["id"] + = string (1) "3", ["k"] + = string (1) "V"} [3] = = Array (11) {["          id "] = = string (1)" 4 ", [" k "] = + string (1)" V "}}[" V "] = = Array (4) {[0] = = Array (11) { ["id"] + = string (1) "1", ["k"] = + string (1) "Q"} [1] = = Array (one) {["id"] + = string ( 1) "2", ["k"] + = string (1) "H"} [2] = = Array (one) {["id"] + = string (1) "3", ["k"] = = St        Ring (1) "V"} [3] = = Array (one) {["id"] + = string (1) "4", ["k"] = = string (1) "V"        }}["H"] + = Array (4) {[0] = = Array (one) {["id"] + = string (1) "1", ["k"] = + string (1) "Q" } [1] = arrAy (one) {["id"] + = string (1) "2", ["k"] + = string (1) "H"} [2] = = Array (one) {["ID "] = = string (1)" 3 ", [" k "] + = string (1)" V "} [3] = = Array (one) {[" id "] = = string (1)" 4 ", [" k "] + = string (1)" V "}}

Filter it into this.

["Q"] => array(1) {        [0] => array(11) {          ["id"] => string(1) "1"          ["k"] => string(1) "Q"        }}["V"] => array(2) {        [0] => array(11) {          ["id"] => string(1) "3"          ["k"] => string(1) "V"        }         [1] => array(11) {          ["id"] => string(1) "4"          ["k"] => string(1) "V"        }}["H"] => array(1) {         [0] => array(11) {          ["id"] => string(1) "2"          ["k"] => string(1) "H"        }}

!--? Php$arr = Array (' Q ' =-->array (' id ' =>1, ' k ' = ' Q '), Array (' ID ' =>2, ' k ' = ' H '), array (' ID ' =>3, ' k ' = = ') V '), array (' ID ' =>4, ' k ' = ' V '),), ' V ' =&G T;array (Array (' ID ' =>1, ' k ' = ' = ' Q '), array (' ID ' =>2, ' k ' = ' H '), array (' ID ' =>3, ' k ' = ' V '), Array ( ' id ' =>4, ' k ' = ' V '), ' H ' =>array (array (' ID ' =>1, ' K ' = = ' Q '), array (' ID ' =>2, ' k ' = ' H '), array (' ID ' =& Gt;3, ' k ' = ' V '), array (' ID ' =>4, ' k ' = ' V '), ); Echo ' 
';print_r($arr);$new_arr = array();foreach($arr as $key=>$val) {    foreach($val as $k=>$v) {        if($key == $v['k']) {            $new_arr[$key][] = $v;        }    }}echo '';print_r($new_arr);
                                        
                                    
Array_filter ($arr, fun);
Fun inside with the array of key go and K judge, not equal to the unset off
                                        
                                    
$keys = array_keys($arr);$newArr = array();$i = 0;foreach ($arr as $key => $value) {    $newArr[$key] = array_filter($value, function ($val) {        GLOBAL $keys;        GLOBAL $i;        return $val["k"] == $keys[$i];    });     $i++;}
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