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详解 $_SERVER 函数中QUERY_STRING和REQUEST_URI区别

2015-08-20 09:20 579 查看
1,http://localhost/aaa/ (打开aaa中的index.php)

结果:

$_SERVER['QUERY_STRING'] = "";
$_SERVER['REQUEST_URI']  = "/aaa/";
$_SERVER['SCRIPT_NAME']  = "/aaa/index.php";
$_SERVER['PHP_SELF']     = "/aaa/index.php";


2,http://localhost/aaa/?p=222 (附带查询)

结果:

$_SERVER['QUERY_STRING'] = "p=222";
$_SERVER['REQUEST_URI']  = "/aaa/?p=222";
$_SERVER['SCRIPT_NAME']  = "/aaa/index.php";
$_SERVER['PHP_SELF']     = "/aaa/index.php";


3,http://localhost/aaa/index.php?p=222&q=333

结果:

$_SERVER['QUERY_STRING'] = "p=222&q=333";
$_SERVER['REQUEST_URI']  = "/aaa/index.php?p=222&q=333";
$_SERVER['SCRIPT_NAME']  = "/aaa/index.php";
$_SERVER['PHP_SELF']     = "/aaa/index.php";


由实例可知:

$_SERVER["QUERY_STRING"]  获取查询语句,实例中可知,获取的是?后面的值
$_SERVER["REQUEST_URI"]   获取 http://localhost 后面的值,包括/
$_SERVER["SCRIPT_NAME"]   获取当前脚本的路径,如:index.php
$_SERVER["PHP_SELF"]      当前正在执行脚本的文件名


转载http://blog.sina.com.cn/s/blog_686999de0100jgda.html
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