PHP脚本提取艺术家&标题从广播/冰播流


PHP script to extract artist & title from Shoutcast/Icecast stream

我找到了一个脚本,可以提取艺术家&来自Icecast或Shoutcast流的标题名称。我想要的脚本自动更新时,一首歌改变了,在那一刻它的工作只有当我执行它。我是PHP新手,所以任何帮助都会很感激。谢谢!

define('CRLF', "'r'n");
class streaminfo{
public $valid = false;
public $useragent = 'Winamp 2.81';
protected $headers = array();
protected $metadata = array();
public function __construct($location){
    $errno = $errstr = '';
    $t = parse_url($location);
    $sock = fsockopen($t['host'], $t['port'], $errno, $errstr, 5);
    $path = isset($t['path'])?$t['path']:'/';
    if ($sock){
        $request = 'GET '.$path.' HTTP/1.0' . CRLF . 
            'Host: ' . $t['host'] . CRLF . 
            'Connection: Close' . CRLF . 
            'User-Agent: ' . $this->useragent . CRLF . 
            'Accept: */*' . CRLF . 
            'icy-metadata: 1'.CRLF.
            'icy-prebuffer: 65536'.CRLF.
            (isset($t['user'])?'Authorization: Basic '.base64_encode($t['user'].':'.$t['pass']).CRLF:'').
            'X-TipOfTheDay: Winamp "Classic" rulez all of them.' . CRLF . CRLF;
        if (fwrite($sock, $request)){
            $theaders = $line = '';
            while (!feof($sock)){ 
                $line = fgets($sock, 4096); 
                if('' == trim($line)){
                    break;
                }
                $theaders .= $line;
            }
            $theaders = explode(CRLF, $theaders);
            foreach ($theaders as $header){
                $t = explode(':', $header); 
                if (isset($t[0]) && trim($t[0]) != ''){
                    $name = preg_replace('/[^a-z][^a-z0-9]*/i','', strtolower(trim($t[0])));
                    array_shift($t);
                    $value = trim(implode(':', $t));
                    if ($value != ''){
                        if (is_numeric($value)){
                            $this->headers[$name] = (int)$value;
                        }else{
                            $this->headers[$name] = $value;
                        }
                    }
                }
            }
            if (!isset($this->headers['icymetaint'])){
                $data = ''; $metainterval = 512;
                while(!feof($sock)){
                    $data .= fgetc($sock);
                    if (strlen($data) >= $metainterval) break;
                }
               $this->print_data($data);
                $matches = array();
                preg_match_all('/(['x00-'xff]{2})'x0'x0([a-z]+)=/i', $data, $matches, PREG_OFFSET_CAPTURE);
               preg_match_all('/([a-z]+)=([a-z0-9'(')'[']., ]+)/i', $data, $matches, PREG_SPLIT_NO_EMPTY);
               echo '<pre>';var_dump($matches);echo '</pre>';
                $title = $artist = '';
                foreach ($matches[0] as $nr => $values){
                  $offset = $values[1];
                  $length = ord($values[0]{0}) + 
                            (ord($values[0]{1}) * 256)+ 
                            (ord($values[0]{2}) * 256*256)+ 
                            (ord($values[0]{3}) * 256*256*256);
                  $info = substr($data, $offset + 4, $length);
                  $seperator = strpos($info, '=');
                  $this->metadata[substr($info, 0, $seperator)] = substr($info, $seperator + 1);
                    if (substr($info, 0, $seperator) == 'title') $title = substr($info, $seperator + 1);
                    if (substr($info, 0, $seperator) == 'artist') $artist = substr($info, $seperator + 1);
                }
                $this->metadata['streamtitle'] = $artist . ' - ' . $title;
            }else{
                $metainterval = $this->headers['icymetaint'];
                $intervals = 0;
                $metadata = '';
                while(1){
                    $data = '';
                    while(!feof($sock)){
                        $data .= fgetc($sock);
                        if (strlen($data) >= $metainterval) break;
                    }
                    //$this->print_data($data);
                    $len = join(unpack('c', fgetc($sock))) * 16;
                    if ($len > 0){
                        $metadata = str_replace("'0", '', fread($sock, $len));
                        break;
                    }else{
                        $intervals++;
                        if ($intervals > 100) break;
                    }
                }
                $metarr = explode(';', $metadata);
                foreach ($metarr as $meta){
                    $t = explode('=', $meta);
                    if (isset($t[0]) && trim($t[0]) != ''){
                        $name = preg_replace('/[^a-z][^a-z0-9]*/i','', strtolower(trim($t[0])));
                        array_shift($t);
                        $value = trim(implode('=', $t));
                        if (substr($value, 0, 1) == '"' || substr($value, 0, 1) == "'"){
                            $value = substr($value, 1);
                        }
                        if (substr($value, -1) == '"' || substr($value, -1) == "'"){
                            $value = substr($value, 0, -1);
                        }
                        if ($value != ''){
                            $this->metadata[$name] = $value;
                        }
                    }
                }
            }
            fclose($sock);
            $this->valid = true;
        }else echo 'unable to write.';
    }else echo 'no socket '.$errno.' - '.$errstr.'.';
}

public function print_data($data){
    $data = str_split($data);
    $c = 0;
    $string = '';
    echo "<pre>'n000000 ";
    foreach ($data as $char){
        $string .= addcslashes($char, "'n'r'0't");
        $hex = dechex(join(unpack('C', $char)));
        if ($c % 4 == 0) echo ' ';
        if ($c % (4*4) == 0 && $c != 0){
          foreach (str_split($string) as $s){
            //echo " $string'n";
            if (ord($s) < 32 || ord($s) > 126){
              echo ''''.ord($s);
            }else{
              echo $s;
            }
          }
          echo "'n";
          $string = '';
          echo str_pad($c, 6, '0', STR_PAD_LEFT).'  ';
        }
        if (strlen($hex) < 1) $hex = '00';
        if (strlen($hex) < 2) $hex = '0'.$hex;
          echo $hex.' ';
        $c++;
    }
    echo "  $string'n</pre>";
}
public function __get($name){
    if (isset($this->metadata[$name])){
        return $this->metadata[$name];
    }
    if (isset($this->headers[$name])){
        return $this->headers[$name];
    }
    return null;
 }
}
$t = new streaminfo('http://64.236.34.196:80/stream/1014'); // get metadata

echo Meta Interval: $t->icymetaint;
echo Current Track: $t->streamtitle;

您需要以设定的间隔不断地查询流,以发现歌曲何时发生变化。

这可以通过调度一个cron作业来完成。如果在Windows上,您应该使用Windows任务调度程序

如果你想运行PHP脚本来保持你的元数据是最新的(我假设你正在制作一个网站,并在这里使用html音频标签),你可以使用一个ajax函数的ontimeupdate事件。如果你不是,你可能应该查找你的音频播放文档类似的东西。

<audio src="http://ip:port/;" ontimeupdate="loadXMLDoc()">

你可以在这里找到一个很好的例子http://www.w3schools.com/php/php_ajax_php.asp

你想在脚本的最后使用一个PHP变量来使用PHP echo函数一次性获取所有相关信息。

<?php ....
$phpVar=$streamtitle;
$phpVar2=$streamsong;
$result="I want my string to look like this: <br> {$phpVar} {$phpVar2}";
echo $result;
?>

,然后使用。onreadystatechange调用的函数来修改你想要的特定元素在你的网站上使用。resonsetext(这将包含与你的PHP脚本的echo相同的内容)。

在网上搜索了4个小时后,这是我发现的唯一的shooutcast元数据脚本!谢谢。

要持续运行,为什么不使用setInterval与jQuery的AJAX调用相结合?

<script>
$(function() {
    setInterval(getTrackName,16000);
});
function getTrackName() {
    $.ajax({
    url: "track_name.php"
    })
    .done(function( data ) {
    $( "#results" ).text( data );
    });
}
</script>

还有你最后几行"echo"打断了我的脚本。只要在Meta Interval周围加上引号,等等....