Url-related common functions

Url: several common functions: parse_url () this function parses a URL and returns an associated array, including the various components in the URL. This function is not used to verify the validity of a given URL, but is used to separate it into the parts listed below. Incomplete URLs are also accepted, and parse_url () tries to parse them correctly as much as possible. & Nbsp; $ _ urlwww.baidu.com

Parse_url ()

This function parses a URL and returns an associated array, which contains various components in the URL.

This function is not used to verify the validity of a given URL, but is used to separate it into the parts listed below. Incomplete URLs are also accepted,Parse_url ()Will try to correctly parse it as much as possible.

$ _ Url = "http://www.baidu.com/web? Id = 15 & page = 5 "; $ _ par = pares_url ($ _ url); var_dump ($ _ par );

Output result:

array(4) {  ["scheme"]=>  string(4) "http"  ["host"]=>  string(13) "www.baidu.com"  ["path"]=>  string(4) "/web"  ["query"]=>  string(12) "id=15&page=5"}

Parse_str ()

Parses a string into multiple variables.

Parse_str ($ _ par ['query'], $ _ query); var_dump ($ _ query); output result: array (2) {["id"] => string (2) "15" ["page"] => string (1) "5 "}

Http_bustm_query ()

Generate a URL-encode request string using the given correlated (or subscript) array.

Unset ($ _ query ['Page']); // clear page var_dump (http_build_query ($ _ query); output: string (5) "id = 15"

It is used to parse, split, and reorganize URL strings.