<?php
/* There is a function in php wich convert all string to uppercase */
echo strtoupper("Hello samy! how are u ?");
// output : HELLO SAMY! HOW ARE U ?
?>
<?php
$str = "Mary Had A Little Lamb and She LOVED It So";
$str = strtoupper($str);
echo $str; // muestra: MARY HAD A LITTLE LAMB AND SHE LOVED IT SO
?>
$str = strtolower($str);$lowercase = "this is lower case";
$uppercase = strtoupper($lowercase);
echo $uppercase;string strtoupper ( $string )
setlocale(LC_CTYPE, 'de_DE.UTF8');
// be noted
echo strtoupper('Umlaute äöü in uppercase'); // outputs "UMLAUTE äöü IN UPPERCASE"
echo mb_strtoupper('Umlaute äöü in uppercase', 'UTF-8'); // outputs "UMLAUTE ÄÖÜ IN UPPERCASE"