strtoupper() in php code example

Example 1: strtoupper in php

<?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 ?
?>

Example 2: strtoupper in php

$str = "upper";
//php string to uppercase
echo strtoupper($str); // => UPPER