variabele php code example

Example 1: strtolower php

strtolower ( string $string ) : string 
//Returns string with all alphabetic characters converted to lowercase.
$string = 'HELLO WORLD';
echo strtolower($string); //Output: 'hello world'
$string = 'HeLlO WoRlD';
echo strtolower($string); //Output: 'hello world'

Example 2: how to debug in php

ini_set('display_errors', 'On');
error_reporting(E_ALL);