Write a program accepts a string and calculates number of upper case letters
and lower case letters available in that string.
<?php
function count_case($str)
{
$upper = 0;
$lower = 0;
for ($i = 0; $i < strlen($str); $i++)
{
if ($str[$i] >= 'A' && $str[$i] <= 'Z'){
$upper++;
}
else if ($str[$i] >= 'a' && $str[$i] <= 'z') {
$lower++;
}
else {}
}
echo "Upper case letters: " , $upper,"<br>" ;
echo "Lower case letters : " ,$lower,"<br>" ;
}
$str = "This Is PHP Class";
count_case($str);
?>
Output
