urldecode Function

urldecode targets encoded characters within a string.

The function is capable of decoding a comprehensive range of characters, including those outside the ASCII range. Non-ASCII characters are first treated as UTF-8 bytes, followed by the application of percent decoding to each byte, facilitating the accurate decoding of multibyte characters.

Examples

> urldecode("Hello+World%21")
Hello World!
> urldecode("%E2%98%83")
☃
> urldecode("foo%3Abar%40localhost%3Ffoo%3Dbar%26bar%3Dbaz")
foo:bar@localhost?foo=bar&bar=baz