$_SERVER['QUERY_STRING']的功能是获取页面传递的URL参数，如a=1&b=2&c=3&d=4，我们希望将传递的参数分割并用数组存储，以下，武汉网站建设公司制作二个页面，实现超全局变量及参数分割的演示：

首先是index.php,页面代码：

<A href="show.php?a=1&b=2&c=3&d=4">点我</A>

然后制作show.php页面，页面代码：

<?php
echo $_SERVER['HTTP_REFERER'];
echo "<br>";
echo $_SERVER['PHP_SELF'];
echo "<br>";
echo $_SERVER['QUERY_STRING'];
echo "<br>";
echo $_SERVER['SCRIPT_NAME'];
echo "<br>";
echo $_SERVER['SCRIPT_FILENAME'];
echo "<br>";
echo $_SERVER['REQUEST_URI'];
echo "<br>";

var_dump($_REQUEST);//上一页地址

$pk=array();
foreach($_REQUEST as $vt){
 $pk[]=$vt;
 echo $vt."<br>";
}

$km=$_SERVER['QUERY_STRING'];//上一页传递的字符串，如a=1&b=2&c=3&d=4
echo $km;
$at=array();
$at=explode("&",$km);
var_dump($at);

foreach($at as $sm){
 $ex[]=explode("=",$sm);//将第一次切出的结果存到数组中
 //var_dump($ex);
 //echo "<hr>";
}
 var_dump($ex);

?>

最终实现效果如下：

http://localhost/index.php
/show.php
a=1&b=2&c=3&d=4
/show.php
C:/wamp/www/show.php
/show.php?a=1&b=2&c=3&d=4

C:\wamp\www\show.php:23:
array (size=4)
  'a' => string '1' (length=1)
  'b' => string '2' (length=1)
  'c' => string '3' (length=1)
  'd' => string '4' (length=1)

1
2
3
4
a=1&b=2&c=3&d=4

C:\wamp\www\show.php:35:
array (size=4)
  0 => string 'a=1' (length=3)
  1 => string 'b=2' (length=3)
  2 => string 'c=3' (length=3)
  3 => string 'd=4' (length=3)

C:\wamp\www\show.php:42:
array (size=4)
  0 => 
    array (size=2)
      0 => string 'a' (length=1)
      1 => string '1' (length=1)
  1 => 
    array (size=2)
      0 => string 'b' (length=1)
      1 => string '2' (length=1)
  2 => 
    array (size=2)
      0 => string 'c' (length=1)
      1 => string '3' (length=1)
  3 => 
    array (size=2)
      0 => string 'd' (length=1)
      1 => string '4' (length=1)