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Homephp教程PHP源码php获取网址url并替换参数或网址的方法(1/4)

<script>ec(2);</script>

代码如下:
//获得当前的脚本网址
function GetCurUrl()
{
if(!empty($_SERVER["REQUEST_URI"]))
{
$scriptName = $_SERVER["REQUEST_URI"];
$nowurl = $scriptName;
}
else
{
$scriptName = $_SERVER["PHP_SELF"];
if(empty($_SERVER["QUERY_STRING"]))
{
$nowurl = $scriptName;
}
else
{
$nowurl = $scriptName."?".$_SERVER["QUERY_STRING"];
}
}
return $nowurl;
}

另一个是PHP替换网址中query部分的某变量的值比如 ,我们要设$url中的key=321;
其实有几种情况:
$url='www.111cn.net/a.php教程?key=330′;
或$url='www.111cn.net/a.php;
或$url='www.111cn.net/a.php?cat=2′;
等等。虽然情况很多,但PHP处理起来非常简单,如下:
复制代码 代码如下:
/* 将URL中的某参数设为某值*/ //【这一段就挺好啊】
function url_set_value($url,$key,$value)
{
$a=explode('?',$url);
$url_f=$a[0];
$query=$a[1];
parse_str($query,$arr);
$arr[$key]=$value;
return $url_f.'?'.http_build_query($arr);
}

不过我的替换是这样写的。。当然也很烂 。。 

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