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array_count_values — Counts the occurrences of all elements in the argument and returns an associative array of the resulting frequencies.


array array_count_values(values);
array values: Array of values to count


Associative array; NULL if given an invalid argument


Passing an array to array_count_values() returns an associative array in which all the unique elements are counted and returned with the values as the keys and the frequencies as the values.


PHP 4 since 4.0b4


Example 18. Display the number of times a given element occurs in an array

$scores = array('A', 'A', 'C', 'B', 'A', 'C', 'C', 'B', 'A');
$grades = array_count_values($scores);
echo "There were $grades[A] A's, $grades[B] B's, and $grades[C] C's";

There were 4 A's, 2 B's, and 3 C's

PHP Functions Essential Reference. Copyright © 2002 by New Riders Publishing (Authors: Zak Greant, Graeme Merrall, Torben Wilson, Brett Michlitsch). This material may be distributed only subject to the terms and conditions set forth in the Open Publication License, v1.0 or later (the latest version is presently available at The authors of this book have elected not to choose any options under the OPL. This online book was obtained from and is designed to provide information about the PHP programming language, focusing on PHP version 4.0.4 for the most part. The information is provided on an as-is basis, and no warranty or fitness is implied. All persons and entities shall have neither liability nor responsibility to any person or entity with respect to any loss or damage arising from the information contained in this book.

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