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php -- 变量

2024-07-05 23:27:56   224人阅读

----- 006-variable.php -----

 1 <!DOCTYPE html>
 2 <html>
 3 <head>
 4     <meta http-equiv="content-type" content="text/html; charset=utf-8">
 5     <title>一个PHP网页</title>
 6 </head>
 7 <body>
 8 <?php
 9     //静态变量测试
10     function static_test()
11     {
12         static $haha = "";
13         $haha .= "哈";
14         echo $haha."<br/>\n";
15     }
16     static_test();
17     static_test();
18     static_test();
19     static_test();
20     static_test();
21     static_test();
22     static_test();
23 ?>
24 </body>
25 </html>

----- 007-predefine_variable.php -----

预定义变量

 1 <!DOCTYPE html>
 2 <html>
 3 <head>
 4     <meta http-equiv="content-type" content="text/html; charset=utf-8">
 5     <title>一个PHP网页</title>
 6 </head>
 7 <body>
 8 <pre>
 9 <?php
10     echo "IP地址是：", $_SERVER[‘REMOTE_ADDR‘], "<br/>";
11     echo "用户代理是：", $_SERVER[‘HTTP_USER_AGENT‘], "<br/>";
12 ?>
13 <h3>_SERVER</h3>
14 <?php
15     foreach($_SERVER as $key=>$value)
16     {
17         echo $key." : ".$value."\n";
18     }
19 ?>
20 <h3>超级全局变量GLOBALS</h3>
21 <?php print_r($GLOBALS); ?>
22 <br/>
23 <?php
24     print_r($_REQUEST);
25     //print_r($_SESSION);#未识别的变量
26 ?>
27 </pre>
28 </body>
29 </html>


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