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HomeBackend DevelopmentPHP Tutorial用PHP读取RSS feed的代码_PHP

而助易网的rss读取就是在这个程序的基础上稍做改造而成,主
要是输出了一个数组字符串以及解决编码问题。

php源代码及代码详细解释如下:

//RSS源地址列表数组
$rssfeed = array("http://www.bitsCN.com/feed",
"http://rss.sina.com.cn/news/allnews/sports.xml",
"http://ent.163.com/special/00031K7Q/rss_toutiao.xml",
"http://tech.163.com/special/00091JPQ/techimportant.xml");

//设置编码为UTF-8
header('Content-Type:text/html;charset= UTF-8');     

for($i=0;$i    $buff = "";
    $rss_str="";
    //打开rss地址,并读取,读取失败则中止
    $fp = fopen($rssfeed[$i],"r") or die("can not open $rssfeed"); 
    while ( !feof($fp) ) {
        $buff .= fgets($fp,4096);
    }
    //关闭文件打开
    fclose($fp);

    //建立一个 XML 解析器
    $parser = xml_parser_create();
    //xml_parser_set_option -- 为指定 XML 解析进行选项设置
    xml_parser_set_option($parser,XML_OPTION_SKIP_WHITE,1);
    //xml_parse_into_struct -- 将 XML 数据解析到数组$values中
    xml_parse_into_struct($parser,$buff,$values,$idx);
    //xml_parser_free -- 释放指定的 XML 解析器
    xml_parser_free($parser);

    foreach ($values as $val) {
        $tag = $val["tag"];
        $type = $val["type"];
        $value = $val["value"];
        //标签统一转为小写
        $tag = strtolower($tag);

        if ($tag == "item" && $type == "open"){
            $is_item = 1;
        }else if ($tag == "item" && $type == "close") {
            //构造输出字符串
            $rss_str .= "".$title."
";
            $is_item = 0;
        }
        //仅读取item标签中的内容
        if($is_item==1){
            if ($tag == "title") {$title = $value;}        
            if ($tag == "link") {$link = $value;}
        }
    }
    //输出结果
    echo $rss_str."
";
}
?>

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