PHP Manual . Prev . Next . PHP 4 >= 4.0.0) array_count_values -- Counts all the values of an array . array array_count_values ( array input) . array_count_values() returns an array using the values of the input array as keys and their frequency in input as values. Example 1. array_count_values() example . array = array (1, "hello", 1, "world", "hello"); print_r(array_count_values ($array)); . ... Array ( [1] => 2 [hello] => 2 [world] => 1 ) . ... array_chunk . ...