PHP Parse_url a useful function

PHP is a useful function parse_url, especially convenient for the analysis of information capture. Examples are as follows: Copy code code as follows:
$url = "http://www.electrictoolbox.com/php-extract-domain-from-full-url/";
$parts = Parse_url ($url);

Output:
Copy code code as follows:
Array
(
[Scheme] => http
[Host] => www.electrictoolbox.com
[Path] =>/php-extract-domain-from-full-url/
)

Another example:
Copy code code as follows:
<?php
$url = ' Http://username:password@hostname/path?arg=value#anchor ';
Print_r (Parse_url ($url));
Echo Parse_url ($url, Php_url_path);
?>

Output:
Copy code code as follows:
Array
(
[Scheme] => http
[Host] => hostname
[User] => username
[Pass] => password
[Path] =>/path
[Query] => arg=value
[Fragment] => anchor
)

As you can see, it's easy to break down the various parts of a URL, so it's easy to get the specified parts out, like
Echo Parse_url ($url, Php_url_path);
In the second argument, you set the following parameters:
Php_url_scheme, Php_url_host, Php_url_port, Php_url_user, Php_url_pass, Php_url_path, php_url_query or PHP_URL_ FRAGMENT.