PHP parse url and get URL parameters and get URL parameters of four ways, url four kinds of _php tutorial

PHP parse the URL and get the URL parameters and get URL parameters of four ways, url four kinds of

The following code is the PHP parse URL and get the parameters in the URL, the code is as follows:

<?php$url = ' http://www.baidu.com/index.php?m=content&c=index&a=lists&catid=6&area=0& Author=0&h=0&region=0&s=1&page=1 '; $arr = Parse_url ($url); Var_dump ($arr); $arr _query = Converturlquery ($arr [' query ']); Var_dump ($arr _query); Var_dump (Geturlquery ($arr _query));/** * Change string parameter to array * @param $ Query * @return array Array (size=10) ' m ' = + string ' content ' (length=7) ' c ' + = String ' index ' (le ngth=5) ' a ' = = String ' lists ' (length=5) ' catid ' = = String ' 6 ' (length=1) ' area ' = = St Ring ' 0 ' (length=1) ' Author ' = = String ' 0 ' (length=1) ' h ' = = String ' 0 ' (length=1) ' Regio n ' = = String ' 0 ' (length=1) ' s ' = = String ' 1 ' (length=1) ' page ' = = String ' 1 ' (length=1) */func  tion Converturlquery ($query) {$queryParts = Explode (' & ', $query);  $params = Array ();    foreach ($queryParts as $param) {$item = explode (' = ', $param); $params [$item [0]] = $item [1]; } return $params;} /** * Change parameter to String * @param $array _query * @return String ' m=content&c=index&a=lists&catid=6&area=0& Amp;author=0&h=0&region=0&s=1&page=1 ' (length=73) */function geturlquery ($array _query) {$tmp = array  ();  foreach ($array _query as $k + $param) {$tmp [] = $k. ' = '. $param;  } $params = Implode (' & ', $tmp); return $params;}

The following four kinds of examples to introduce the PHP URL parameter acquisition method.

In the case of known URL parameters, we can use $_get to obtain the corresponding parameter information ($_get[' name ') according to our own situation; how do I get the parameter information on the URL in an unknown situation?

The first, using $_server built-in array variables

Relatively primitive $_server[' query_string ' to get, URL parameters, usually returned using this variable will be similar to the data: name=tank&sex=1
If you need to include a file name, you can use $_server["Request_uri"] (return similar to:/index.php?name=tank&sex=1)

The second, using pathinfo built-in functions

The code is as follows:

<?php$test = PathInfo ("http://localhost/index.php");p Rint_r ($test);/*

The results are as follows

Array (   [dirname] = http://localhost//url path   [basename] = index.php//full file name   [extension] + PHP/ /filename suffix   [filename] = = index//file name) */?>

Third, the use of parse_url built-in functions

The code is as follows:

<?php$test = Parse_url ("Http://localhost/index.php?name=tank&sex=1#top");p Rint_r ($test);/*

The results are as follows

Array (   [scheme] + HTTP//Use what protocol   [host] + localhost//hostname   [path] =/index.php//path   [query] =& Gt Name=tank&sex=1//Transmitted Parameters   [fragment] = Top//back root anchor point) */?>

Fourth, the use of basename built-in functions

The code is as follows:

<?php$test = basename ("Http://localhost/index.php?name=tank&sex=1#top"); echo $test;/*

The results are as follows

Index.php?name=tank&sex=1#top*/?>

In addition, there is a regular matching process to get the desired value. This method is more accurate, the efficiency is not considered ...
Following the development of the practice of regular processing methods:

The code is as follows:

<?phppreg_match_all ("/(\w+=\w+) (#\w+)?/I", "Http://localhost/index.php?name=tank&sex=1#top", $match); Print_r ($match);/*

The results are as follows

Array ([  0] = = Array    (      [0] = = Name=tank      [1] = Sex=1#top    )  [1] = = Array     (      [ 0] = = Name=tank       [1] = Sex=1     )   [2] = = Array    (       [0] =      [1] = #top    )) */? >

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