You have an array (see the following array) which has some repeating elements. You want to count the number of occurrence of a specific element(for ex. Mark).
$friends = array("Mark", "Caroline", "Douglas", "Brian", "Mark", "John", "John");
To find the number of occurrence of an array element, follow the steps below-
Step 1: Use array_count_values() function to count number of occurrence of all elements.
If you use the above array as parameter in the array_count_values() function, it will return an associative array whose keys are the values of the above array and values are the number of occurrence of each element of the above array.
Step 2: Output the number of occurrence using array[‘key’]
To show the number of occurrence of an element(ex. Mark), use Mark as key in the associative array that we got in the step 1.
See the complete example below-
<?php $friends = array("Mark", "Caroline", "Douglas", "Brian", "Mark", "John"); $friends_count = array_count_values($friends); echo $friends_count["Mark"]; ?>
Mark occurs 2 times
How it works:
array_count_values() function returns an associative array with the number of occurrence of each element. If you print the $friends_count, you’ll see the following-
Array( [Mark] => 2 [Caroline] => 1 [Douglas] => 1 [Brian] => 1 [John] => 1 )
The above array outputs occurrence of each element. To display the occurrence number of Mark, we used $friends_count[“Mark”] in the code above.