In what situations would using the PHP function urldecode() be necessary when working with URLs?

When working with URLs in PHP, the urldecode() function is necessary when you need to decode encoded characters in a URL. This is useful when handling data that has been passed through a URL and encoded using urlencode() or similar functions. It is important to decode the data before using it to ensure that special characters are properly interpreted. 

$url = "https://www.example.com/page?data=Hello%20World%21";
$decoded_data = urldecode($_GET['data']);
echo $decoded_data;

Keywords

PHP urldecode() URLs encoding decoding

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