PHP array_intersect_key() Function Example | PHP Array

PHP array_intersect_key() is an inbuilt function that compares the keys of two (or more) arrays and returns the matches. PHP Array intersect_key Example.

PHP array_intersect_key() is an inbuilt function that compares the keys of two (or more) arrays and returns the matches. The function compares the keys of two or more arrays, and return the array that contains the items from array1 that are present in array2,  array3, etc.

PHP array_intersect_key()

The array_intersect_key() a builtin function in PHP is used to compute an intersection of two or more arrays. The function is different from  array_intersect() and array_intersect_assoc() in a way that it uses the keys for the comparison and returns the matching key items.

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