(PHP 4, PHP 5)
strtoupper — Make a string uppercase
Returns string with all alphabetic characters converted to uppercase.
Note that 'alphabetic' is determined by the current locale. For instance, in the default "C" locale characters such as umlaut-a (Г¤) will not be converted.
The input string.
Returns the uppercased string.
Example#1 strtoupper() example
<?php
$str = "Mary Had A Little Lamb and She LOVED It So";
$str = strtoupper($str);
echo $str; // Prints MARY HAD A LITTLE LAMB AND SHE LOVED IT SO
?>
Note: This function is binary-safe.