Array comparison Efficiency

Two Arrays: ArrayA and ArrayB {code ...} {code ...} expected result {code ...} my current practice is to do a two-tier loop {code ...} is there any more efficient way? Two Arrays: ArrayA and ArrayB

$arrayA = array (  0 => array (    0 => 1,    4 => 1,    6 => 1,  ),  1 => array (    1 => 1,    3 => 1,    5 => 1,  ),  2 => array (    7 => 1,    8 => 1,    9 => 1,  ),);

$arrayB = array (  0 => array (    0 => 'a',    1 => 'b',    2 => 'c',    3 => 'd',    4 => 'e',    5 => 'f',    6 => 'g',    7 => 'h',    8 => 'i',    9 => 'j',  ),  1 => array (    0 => 'a',    1 => 'b',    2 => 'c',    3 => 'd',    4 => 'e',    5 => 'f',    6 => 'g',    7 => 'h',    8 => 'i',    9 => 'j',  ),  2 => array (    0 => 'a',    1 => 'b',    2 => 'c',    3 => 'd',    4 => 'e',    5 => 'f',    6 => 'g',    7 => 'h',    8 => 'i',    9 => 'j',  ),);

Expected results

$result = array (  0 => array (    0 => 'a',    4 => 'e',    6 => 'g',  ),  1 => array (    1 => 'b',    3 => 'd',    5 => 'f',  ),  2 => array (    7 => 'h',    8 => 'i',    9 => 'j',  ),);

My current practice is to create a two-layer Loop

$result = array ();foreach ($arrayA as $k => $v) {  foreach ($v as $kk => $vv) {    $result[$k][$kk] = $arrayB[$k][$kk];  }}

Is there any more efficient way?

Reply content:

Two Arrays: ArrayA and ArrayB

$arrayA = array (  0 => array (    0 => 1,    4 => 1,    6 => 1,  ),  1 => array (    1 => 1,    3 => 1,    5 => 1,  ),  2 => array (    7 => 1,    8 => 1,    9 => 1,  ),);

$arrayB = array (  0 => array (    0 => 'a',    1 => 'b',    2 => 'c',    3 => 'd',    4 => 'e',    5 => 'f',    6 => 'g',    7 => 'h',    8 => 'i',    9 => 'j',  ),  1 => array (    0 => 'a',    1 => 'b',    2 => 'c',    3 => 'd',    4 => 'e',    5 => 'f',    6 => 'g',    7 => 'h',    8 => 'i',    9 => 'j',  ),  2 => array (    0 => 'a',    1 => 'b',    2 => 'c',    3 => 'd',    4 => 'e',    5 => 'f',    6 => 'g',    7 => 'h',    8 => 'i',    9 => 'j',  ),);

Expected results

$result = array (  0 => array (    0 => 'a',    4 => 'e',    6 => 'g',  ),  1 => array (    1 => 'b',    3 => 'd',    5 => 'f',  ),  2 => array (    7 => 'h',    8 => 'i',    9 => 'j',  ),);

My current practice is to create a two-layer Loop

$result = array ();foreach ($arrayA as $k => $v) {  foreach ($v as $kk => $vv) {    $result[$k][$kk] = $arrayB[$k][$kk];  }}

Is there any more efficient way?

Use PHP built-in functionsarray_intersectYou can.

Reference