解析url的三个php函数
解析url的3个php函数
通过url进行传值,是php中一个传值的重要手段。所以我们要经常对url里面所带的参数进行解析,如果我们知道了url传递参数名称,例如
/index.php?name=tank&sex=1#top
我们就可以通过$_GET['name'],$_GET['sex']来获得传的数据。但是如果我们不知道这些变量名又怎么办呢?这也是写这篇博文的目的,因为自己老是忘,所以做个标记,下次就不要到处找了。
我们可以通php的变量来获得url和要传的参数字符串
$_SERVER["QUERY_STRING"] name=tank&sex=1
$_SERVER["REQUEST_URI"] /index.php?name=tank&sex=1
javascript也可以获得来源的url,document.referrer;方法有很多
1,利用pathinfo
1.2.$test = pathinfo("http://localhost/index.php");??
3.print_r($test);??
4.?>??
5.结果如下??
6.Array??
7.(??
8.??? [dirname] => http://localhost //url的路径??
9.??? [basename] => index.php? //完整文件名??
10.??? [extension] => php? //文件名后缀??
11.??? [filename] => index //文件名??
12.)?
$test = pathinfo("http://localhost/index.php");
print_r($test);
?>
结果如下
Array
(
??? [dirname] => http://localhost //url的路径
??? [basename] => index.php? //完整文件名
??? [extension] => php? //文件名后缀
??? [filename] => index //文件名
)2,利用parse_url
1.2.$test = parse_url("http://localhost/index.php?name=tank&sex=1#top");??
3.print_r($test);??
4.?>??
5.结果如下??
6.Array??
7.(??
8.??? [scheme] => http //使用什么协议??
9.??? [host] => localhost //主机名??
10.??? [path] => /index.php //路径??
11.??? [query] => name=tank&sex=1 // 所传的参数??
12.??? [fragment] => top //后面根的锚点??
13.)?
$test = parse_url("http://localhost/index.php?name=tank&sex=1#top");
print_r($test);
?>
结果如下
Array
(
??? [scheme] => http //使用什么协议
??? [host] => localhost //主机名
??? [path] => /index.php //路径
??? [query] => name=tank&sex=1 // 所传的参数
??? [fragment] => top //后面根的锚点
)3,利用basename
1.2.$test = basename("http://localhost/index.php?name=tank&sex=1#top");??
3.echo $test;??
4.?>??
5.结果如下??
6.index.php?name=tank&sex=1#top?
$test = basename("http://localhost/index.php?name=tank&sex=1#top");
echo $test;
?>
结果如下
index.php?name=tank&sex=1#top上面三种方法,我们基本上,就可以得我们所要的东西了。其实还有一种方法就是用正则,也可以很快的得到我们想到的数据。
传递的参数方式有很多,但是主要有这二种,一种是,name=tank&sex=1#top;一种是,name=tank&sex=1。
1.2.preg_match_all("/(\w+=\w+)(#\w+)?/i","http://localhost/index.php?name=tank&sex=1#top",$match);??
3.print_r($match);?>??
4.结果如下??
5.Array??
6.(??
7.??? [0] => Array??
8.??????? (??
9.??????????? [0] => name=tank??
10.??????????? [1] => sex=1#top??
11.??????? )??
12.??? [1] => Array??
13.??????? (??
14.??????????? [0] => name=tank??
15.??????????? [1] => sex=1??
16.??????? )??
17.??? [2] => Array??
18.??????? (??
19.??????????? [0] =>??
20.??????????? [1] => #top??
21.??????? )??
22.)?
preg_match_all("/(\w+=\w+)(#\w+)?/i","http://localhost/index.php?name=tank&sex=1#top",$match);
print_r($match);?>
结果如下
Array
(
??? [0] => Array
??????? (
??????????? [0] => name=tank
??????????? [1] => sex=1#top
??????? )
??? [1] => Array
??????? (
??????????? [0] => name=tank
??????????? [1] => sex=1
??????? )
??? [2] => Array
??????? (
??????????? [0] =>
??????????? [1] => #top
??????? )
)要的数据都匹配出来了,好长时间搞正则了,手都有点生了。上面正则中的规则不是死的,规则是根据url来推测的。

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