$key = $_GET['key']; //获得关键字
$select = $_GET['select']; //获得搜索引擎的选择
switch($select) //根据搜索引擎的不同跳转到不同的页面
{
case "google": //GOOGLE
$url = "http://www.google.com/search?q=".$key;
header("Location: $url");
break;
case "yahoo": //YAHOO
$url = "http://search.yahoo.com/search?p=".$key;
header("Location: $url");
break;
case "baidu": //百度
$url = "http://www.baidu.com/s?wd=".$key;
header("Location: $url");
break;
default: //如果搜索引擎不存在,结束程序
break;
}
?>
运行结果如图36-4所示。
图36-4 PHP综合搜索引擎
单击【Submit】按钮后,可以看到Yahoo网站被打开了,并搜索到了相关的搜索结果,如图36-5所示。
图36-5 Yahoo的搜索结果
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