String to UPPERCASE

How to Convert A String To Uppercase in PHP

The PHP strtoupper() function is used to convert a string to uppercase.

Try the below example to under the working of this function, which convert all alphabets of a string to uppercase.

Example:

<?php
  $str = 'Welcome to Tecadmin.net';
  echo strtoupper($str);
?>

<?php

$str = 'Welcome to Tecadmin.net';

echo strtoupper($str);

Output:

WELCOME TO TECADMIN.NET