Note: This manual is provided for your convenience only - this is not the official source and may not be 100% up to date.
CLXIX. URL Functions
Dealing with URL strings: encoding, decoding and parsing.
No external libraries are needed to build this extension.
There is no installation needed to use these functions; they are part of the PHP core.
This extension has no configuration directives defined in php.ini.
This extension has no resource types defined.
The constants below are defined by this extension, and will only be available when the extension has either been compiled into PHP or dynamically loaded at runtime.
The following constants are meant to be used with parse_url() and are available since PHP 5.1.2.