Find common values in multiple arrays with PHP

by

array_intersect()

$intersect = array_intersect($array1,$array2,$array3);

If you don’t know how many arrays you have, then build up an array of arrays and user call_user_func_array()

$list = array();
$list[] = $array1;
$list[] = $array2;
$list[] = $array3;
$intersect = call_user_func_array('array_intersect',$list);

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