Reconstructs a two-dimensional array. Key is ID Val is an update field

$arr =array  (      ' Contract_type '  => Array  (   ' 0 ')  => 0, ' 1 '  => 0, ' 2 '  => 0, ' 3 '  => 0, ),      ' Use_contract '  => Array  (  ' 0 '  => 7,  ' 1 '  => 8 ,  ' 2 '  => 9, ' 3 '  => 10,  ',      ' use_name '  = > Array  (   ' 0 '  =>  ' contract man 1 ',  ' 1 '  =>  ' contract Man 2 ',  ' 2 '  = >  ' contract man 3 ', ' 3 '  =>  ' contract man 4 ',  ',      ' Contract_money '  =>  Array  (   ' 0 '  =>  ' contract Gold 1 ',  ' 1 '  =>  ' contract Gold 2 ',   ' 2 '  =>  ' contract Gold 3 ',  ' 3 '  =>  ' contract Gold 4 ', );      $id _arr= $arr [' Use_contract '];    unset ($arr [' use_contract ']);     //reconstructs a two-dimensional array. key  is Id &nbs.p; val  is the update field      $new _arr=array ();    foreach  ($arr  as   $key ($val) {        foreach  ($val  as   $k ($v) {            foreach  ($id _arr  as  $id _k=> $id _v) {                 if ($id _k== $k  ) {                      $new [$id _v][$key]= $v;                 }             }        }    }           Var_dump ($new);

The

reconstructs a two-dimensional array. Key is ID Val is the update field