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Arrays. An array in PHP is actually an ordered map. A map is a type that associates values to keys.This type is optimized for several different uses; it can be treated as an array, list (vector), hash table (an implementation of a map), dictionary, collec

array_intersect_uassoc — Computes the intersection of arrays with additional index check, compares indexes by a callback function; array_intersect_ukey — Computes the intersection of arrays using a callback function on the keys for comparison; array_i