PHP to parse the URL and get the parameters in the URL and get the URL parameter four ways _php instance

The following code is the PHP resolution URL and gets the parameters in the URL, as shown in the following code:

<?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));
          /** * Changes the string parameter to an array * @param $query * @return array Array (size=10) ' m ' => string ' content ' (length=7) ' C ' => string ' index ' (length=5) ' a ' => string ' lists ' (length=5) ' catid ' => string ' 6 ' ( length=1) ' area ' => string ' 0 ' (length=1) ' author ' => string ' 0 ' (length=1) ' H ' => String ' 0 ' (length=1) ' region ' => string ' 0 ' (length=1) ' s ' => string ' 1 ' (length=1) '
  Page ' => string ' 1 ' (length=1)/function Converturlquery ($query) {$queryParts = Explode (' & ', $query);
  $params = Array ();
   foreach ($queryParts as $param) {$item = explode (' = ', $param); $params [$item [0]] = $item [1];
return $params; /** * Changes the argument to a string * @param $array _query * @return string string ' m=content&c=index&a=lists&catid=6&area= 0&author=0&h=0&region=0&s=1&page=1 ' (length=73)/function Geturlquery ($array _query) {$tmp = arr
  Ay ();
  foreach ($array _query as $k => $param) {$tmp [] = $k. ' = '. $param;
  } $params = Implode (' & ', $tmp);
return $params; }

Below through four kinds of examples to introduce PHP URL parameter to get the way.

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

The first, the use of $_server built-in array variables

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

The second, the use of pathinfo built-in functions

The code is as follows:

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

The results are as follows

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

Third, the use of Parse_url built-in functions

The code is as follows:

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

The results are as follows

Array
(
   [scheme] => HTTP///using what Protocol
   [host] => localhost//host name
   [path] =>/index.php//Path
   [ Query] => name=tank&sex=1//passed parameters
   [fragment] => the anchor point of Top//back root
)
* * *
?>

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 the way to get the value you need through a regular matching process. This method is more accurate, the efficiency is not considered ...
Below expand practice under the regular treatment method:

The code is as follows:

<?php
Preg_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
    )
)
*/
?>