Count Capital and Small Letters in PHP

Here is a very short script that I wrote in PHP that will count the number of Capital and Small letter in a given string. The code is very simple to use and understand.

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Program Listing

<?php

function CountCaps($string) {

  return strlen(preg_replace('/[^A-Z]+/', '', $string));

}

function CountSmall($string) {

  return strlen(preg_replace('/[^a-z]+/', '', $string));

}

$str = 'WeLcoMe HOme';

$result1 = CountCaps($str);

$result2 = CountSmall($str);

echo 'The word is ' .$str;

echo '<br><br>';

echo 'Number of Capital Letters ' .$result1.'.';

echo '<br><br>';

echo 'Number of Capital Letters ' .$result2.'.';

?>