【PHP】詳解 $_SERVER 函數中QUERY_STRING和REQUEST_URI、SCRIPT_NAME、PHP_SELF區別

實例：
1、http://localhost/index.php/Home/Home/index.html 

$_SERVER['QUERY_STRING'] = "";
$_SERVER['REQUEST_URI']  = "/index.php/Home/H1/index.html";
 $_SERVER['SCRIPT_NAME'] = "/index.php";
 $_SERVER['PHP_SELF'] = "/index.php/Home/H1/index.html";

2、http://localhost/index.php/Home/Home/index.html ?key=test (附帶查詢)
結果：

$_SERVER['QUERY_STRING'] = "key=test";
$_SERVER['REQUEST_URI']  = "/index.php/Home/H1/index.html?key=test"; 
$_SERVER['SCRIPT_NAME'] = "/index.php"; 
$_SERVER['PHP_SELF'] = "/index.php/Home/H1/red.html";

 

由實例可知：
$_SERVER["QUERY_STRING"]  獲取查詢 語句，實例中可知，獲取的是?后面的值
$_SERVER["REQUEST_URI"]   獲取 http://localhost 后面的值，包括/
$_SERVER["SCRIPT_NAME"]   獲取當前腳本的路徑，如：index.php
$_SERVER["PHP_SELF"]      當前正在執行腳本的文件名