I have 1 array, and the this array contains is an array also for each element. ex:
$arraycenter = array(
array('a','b','c','d'), //array1
array('e','d','f','g'), //array2
array('a','b','c','d'), //array3
array('e','d','f','g'), //array4
array(.............. ), //.....
array(...............); //array++
How can check array1 & array3 is the same, and array2 & array 4 is the same?
You can use array_diff
Or (if you don't know how many items need to be checked) you can use array_filter