PHP array_count_values() Function

The array_count_values() is an inbuilt function in PHP which is used to count all the values inside an array. In other words we can say that array_count_values() function is used to calculate the frequency of all of the elements of an array. Syntax:

 array array_count_values( $array ) 

Parameters: This function accepts single parameter $array. This parameter is the array for which we need to calculate the count of values present in it. Return Value: This function returns an associative array with key-value pairs in which keys are the elements of the array passed as parameter and values are the frequency of these elements in an array. Note: If the element is not a string or integer then an E_WARNING is thrown. Examples:

 Input : array = ("Geeks", "for", "Geeks", "Geeks", "Welcome", "for") Output : Array ( [Geeks] => 3 [for] => 2 [Welcome] => 1 ) Input : array = (1, 1, 2, 3 , 1 , 2 , 4, 5) Output : Array ( [1] => 3 [2] => 2 [3] => 1 [4] => 1 [5] => 1 ) 

Below program illustrates the working of array_count_values() function in PHP: PHP

<?php // PHP code to illustrate the working // of array_count_values() function function Counting($array){ return(array_count_values($array)); } // Driver Code $array = array("Geeks", "for", "Geeks", "Geeks", "Welcome", "for"); print_r(Counting($array)); ?> 

Output:

 Array ( [Geeks] => 3 [for] => 2 [Welcome] => 1 ) 

Reference: http://php.net/manual/en/function.array-count-values.php