How to Decode UTF-8 Encoded URLs in PHP?

Decoding Encoded URLs with PHP

In PHP, the urldecode function is used to decode URL-encoded strings. However, a common issue arises when a URL contains UTF-8 encoded characters.

The Problem:

Attempting to decode a URL with an encoded UTF-8 character, such as ô, using urldecode may result in an incorrect output, despite the string decoding correctly in online JS-based decoders.

The Solution:

To properly decode a URL with UTF-8 encoded characters in PHP, it is necessary to utilize the utf8_decode function in conjunction with urldecode. The process includes:

1. First, decode the URL using urldecode:

$url_decoded = urldecode("Ant%C3%B4nio+Carlos+Jobim");

2. Next, decode the UTF-8 encoded characters using utf8_decode:

$utf8_decoded = utf8_decode($url_decoded);

Combining these steps ensures that the URL is correctly decoded and the UTF-8 characters are interpreted corretamente. Output:

'Antônio Carlos Jobim'

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