How to usepreg_match_all() Function in PHP
This approach leverages regular expressions through preg_match_all() to match all characters in the Unicode string (/./u). The resulting matches are then processed using array_count_values() to get the count of each character, and a loop prints the occurrences.
PHP
<?php function countChars($str) { preg_match_all('/./u', $str, $matches); $count = array_count_values($matches[0]); foreach ($count as $char => $occurrences) { echo "'$char' occurs $occurrences times.\n"; } } // Driver code $str = "Welcome w3wiki"; countChars($str); ?> |
Output
'W' occurs 1 times. 'e' occurs 6 times. 'l' occurs 1 times. 'c' occurs 1 times. 'o' occurs 2 times. 'm' occurs 1 times. ' ' occurs 1 times. 'G' occurs 2 times. 'k' occurs 2 times. 's' occurs 2 times. ...
PHP Program to Count the Occurrence of Each Characters
Given a String, the task is to count the occurrences of each character using PHP. This article explores various approaches to achieve this task using PHP, These are:
Table of Content
- Using Arrays and str_split() Function
- Using str_split() and array_count_values() Functions
- Using preg_match_all() Function
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