php如何解析url？解析url的5种方式介绍

php解析url的几种方式

1、利用$_SERVER内置数组变量

访问：
http://localhost/test.php?m=admin&c=index&a=lists&catid=1&page=1

//URL的参数echo $_SERVER['QUERY_STRING'];返回：m=admin&c=index&a=lists&catid=1&page=1//包含文件名echo $_SERVER["REQUEST_URI"];

返回：

/test.php?m=admin&c=index&a=lists&catid=1&page=1

2、利用pathinfo内置函数

echo "<pre>";$url = 'http://localhost/test.php?m=admin&c=index&a=lists&catid=1&page=1#top';var_export(pathinfo($url));

返回：

array (  'dirname' => 'http://localhost',  'basename' => 'test.php?m=admin&c=index&a=lists&catid=1&page=1#top',  'extension' => 'php?m=admin&c=index&a=lists&catid=1&page=1#top',  'filename' => 'test',)

3、利用parse_url内置函数

echo "<pre>";$url = 'http://localhost/test.php?m=admin&c=index&a=lists&catid=1&page=1#top';var_export(parse_url($url));

返回：

array (  'scheme' => 'http',  'host' => 'localhost',  'path' => '/test.php',  'query' => 'm=admin&c=index&a=lists&catid=1&page=1',  'fragment' => 'top',)

4、利用basename内置函数

echo "<pre>";$url = 'http://localhost/test.php?m=admin&c=index&a=lists&catid=1&page=1#top';var_export(basename($url));

返回：

test.php?m=admin&c=index&a=lists&catid=1&page=1#top

5、正则匹配

echo "<pre>";$url = 'http://localhost/test.php?m=admin&c=index&a=lists&catid=1&page=1#top';preg_match_all("/(w+=w+)(#w+)?/i",$url,$match);var_export($match);

返回：

array (  0 =>   array (    0 => 'm=admin',    1 => 'c=index',    2 => 'a=lists',    3 => 'catid=1',    4 => 'page=1#top',  ),  1 =>   array (    0 => 'm=admin',    1 => 'c=index',    2 => 'a=lists',    3 => 'catid=1',    4 => 'page=1',  ),  2 =>   array (    0 => '',    1 => '',    2 => '',    3 => '',    4 => '#top',  ),)

url常用处理方法

/** * 将字符串参数变为数组 * @param $query * @return array */function convertUrlQuery($query){    $queryParts = explode('&', $query);    $params = array();    foreach ($queryParts as $param) {        $item = explode('=', $param);        $params[$item[0]] = $item[1];    }    return $params;}/** * 将参数变为字符串 * @param $array_query * @return string */function getUrlQuery($array_query){    $tmp = array();    foreach ($array_query as $k => $param) {        $tmp[] = $k . '=' . $param;    }    $params = implode('&', $tmp);    return $params;}

例:

echo "<pre>";$url = 'http://localhost/test.php?m=admin&c=index&a=lists&catid=1&page=1#top';$arr = parse_url($url);$arr_query = convertUrlQuery($arr['query']);var_export($arr_query);

返回：

array (  'm' => 'admin',  'c' => 'index',  'a' => 'lists',  'catid' => '1',  'page' => '1',)

var_export(getUrlQuery($arr_query));

返回：

m=admin&c=index&a=lists&catid=1&page=1

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