Detailed explanation of php calls to existing search engines

This article is a detailed analysis and introduction of PHP's calls to the existing search index. Friends in need can refer to it

The code is as follows:

<?php 
    $key = $_GET[&#39;key&#39;];                        //获得关键字 
    $select = $_GET[&#39;select&#39;];                  //获得搜索引擎的选择 
    switch($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; 
    } 
?>

The running results are shown in Figure 36-4.

Figure 36-4 PHP comprehensive search engine

After clicking the [Submit] button, you can see that the Yahoo website is opened and Relevant search results were found, as shown in Figure 36-5.

Figure 36-5 Yahoo search results

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