[PHP] GLOBALS全局變量與_SERVER伺服器的資訊

<!doctype html>
<html>
<head>
<meta charset="utf-8">
<title>GLOBALS全局變量與_SERVER伺服器的資訊</title>
</head>

<body>
<?php

//GLOBALS為全局變量
x = 75;
y = 25;
GLOBALS['z'] = GLOBALS['x'] + GLOBALS['y'];
echo z;
echo " ";
//_SERVER為伺服器的資訊,例位置為http://localhost/GLOBALS.php (伺服器不一定全部都能使用)
echo "PHP_SELF=>"._SERVER['PHP_SELF'];//檔案位置不包含http://localhost/,只顯示GLOBALS.php
echo " ";
echo "GATEWAY_INTERFACE=>"._SERVER['GATEWAY_INTERFACE'];//CGI/1.1
echo " ";
echo "SERVER_ADDR=>"._SERVER['SERVER_ADDR'];//::1
echo " ";
echo "SERVER_NAME=>"._SERVER['SERVER_NAME'];//只顯示localhost
echo " ";
echo "SERVER_SOFTWARE=>"._SERVER['SERVER_SOFTWARE'];//Apache/2.4.7 (Win32) PHP/5.4.24
echo " ";
echo "SERVER_PROTOCOL=>"._SERVER['SERVER_PROTOCOL'];//HTTP/1.1
echo " ";
echo "REQUEST_METHOD=>"._SERVER['REQUEST_METHOD'];//對應下面是使用post就顯示POST
echo " ";
echo "REQUEST_TIME=>"._SERVER['REQUEST_TIME'];//1571071590
echo " ";
echo "QUERY_STRING=>"._SERVER['QUERY_STRING'];//對應下面是happy欄位輸入ddd而顯示happy=ddd
echo " ";
echo "HTTP_ACCEPT=>"._SERVER['HTTP_ACCEPT'];//text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3
echo " ";
echo "HTTP_ACCEPT_CHARSET=>"._SERVER['HTTP_ACCEPT_CHARSET'];
echo " ";
echo "HTTP_HOST=>"._SERVER['HTTP_HOST'];//只顯示localhost
echo " ";
echo "HTTP_REFERER=>"._SERVER['HTTP_REFERER'];//http://localhost/GLOBALS.php
echo " ";
echo "HTTPS=>"._SERVER['HTTPS'];
echo " ";
echo "REMOTE_ADDR=>"._SERVER['REMOTE_ADDR'];//::1
echo " ";
echo "REMOTE_HOST=>"._SERVER['REMOTE_HOST'];
echo " ";
echo "REMOTE_PORT=>"._SERVER['REMOTE_PORT'];
echo " ";
echo "SCRIPT_FILENAME=>"._SERVER['SCRIPT_FILENAME'];//本機位置G:/EasyPHP-DevServer-14.1VC9 20161012/php/GLOBALS.php
echo " ";
echo "SERVER_ADMIN=>"._SERVER['SERVER_ADMIN'];//admin@127.0.0.1
echo " ";
echo "SERVER_PORT=>"._SERVER['SERVER_PORT'];//80
echo " ";
echo "SERVER_SIGNATURE=>"._SERVER['SERVER_SIGNATURE'];
echo " ";
echo "PATH_TRANSLATED=>"._SERVER['PATH_TRANSLATED'];
echo " ";
echo "SCRIPT_NAME=>"._SERVER['SCRIPT_NAME'];//GLOBALS.php
echo " ";
echo "SCRIPT_URI=>"._SERVER['SCRIPT_URI'];
echo " ";
echo "HTTP_USER_AGENT=>"._SERVER['HTTP_USER_AGENT'];//Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/77.0.3865.90 Safari/537.36
echo " ";
echo "SCRIPT_NAME=>"._SERVER['SCRIPT_NAME'];//GLOBALS.php

?>
<form method="post" action="<?php echo _SERVER['PHP_SELF'];?>">
Name:<input type="text" name="happy">
<input type="submit">
</form>
<?php
//_REQUEST 用於收集HTML表單提交的資料。_GET/_POST會直接抓這兩個有相同名字的值。
n1 = _REQUEST['happy'];
n2=_POST['happy'];
echo "\_REQUEST=>".n1.",\_POST=>".n2;
echo " ";
?>
</body>
</html>

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