PHP handles array key value changes

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$data =array (             ' classname ' = ' We are different ',             ' id ' =    ' 6666 ',          );          The Change ID key value is cate_id        $datas =array (           ' classname ' = = $data [' classname '],            ' cate_id ' +  = $data [' ID ' ],        );       $arr 3 =array_combine (Array_keys ($datas), $data);        Echo ' <pre> ';        Var_dump ($arr 3);        Echo ' </pre> ';

After printing for

Array (2) {  ["classname"]=>  string (16) "We are different"  ["cate_id"]=>  string (5) "6666"}

foreach Loop processing

$data =array (            ' classname ' = ' We are different ',            ' id ' =    ' 6666 ',        );        The Change ID key value is cate_id         foreach ($data as $v = = $k) {             $data [' cate_id '] = $data [' id '];   Key field Assignment         }          unset ($data [' id ']);    Destroy the original field ID key          dump ($data);d ie;

Don't know if there's a simple way