Array comparison efficiency problem

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 ',  ),);

Hope to get 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 ',  ),);

The way I do it now is to do two layers of loops

$result = Array (), foreach ($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 ',  ),);

Hope to get results

$result = Array (  0 = = Array (    0 = ' A ',    4 = ' E ',    6 = ' g ',  ),  1 = = Array ( c42/>1 = ' B ',    3 = ' d ',    5 = ' f ',  ),  2 = = Array (    7 = ' h ',    8 = ' I ', 
  9 = ' J ',  ),);

The way I do it now is to do two layers of loops

$result = Array (), foreach ($arrayA as $k = = $v) {  foreach ($v as $kk + = $VV) {    $result [$k] [$KK] = $arrayB [$ k][$KK];  }}

Is there any more efficient way?

You can use the built-in functions of PHP array_intersect

Reference

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