Count char frequency in PHP
Description
The following code shows how to count char frequency.
Example
<?php/* www . j a v a 2s . c o m*/
$sentence = "The rain in Spain falls mainly on the plain";
// Retrieve located characters and their corresponding frequency.
$chart = count_chars($sentence, 1);
foreach($chart as $letter=>$frequency)
echo "Character ".chr($letter)." appears $frequency times<br />";
?>
The code above generates the following result.
