you can use this loop to generate and show all the alphabet letters with your php scripts

CAPITAL LETTERS
PHPCODE:
<?php
for ($i=65; $i<=90; $i++) {
$Letter = chr($i);
print $Letter ." ";
}
?>
OUTPUT:
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

if you want lower case you can use this script:
PHPCODE:
<?phpfor ($i=97; $i<=122; $i++) {
$Letter = chr($i);
print $i.' - '.$Letter ." <br>";
}
?>


hope this helps