Question

我想要做的是使用php执行youtube-dl -x --audio-format mp3 "token"并获取以下参数的json：

status（错误= 0 /成功= 1）
已保存的文件网址（您将在控制台结果示例中看到它：[avconv] Destination: Jennifer Lopez - Booty ft. Iggy Azalea-nxtIRArhVD4.mp3）

这是我编写的PHP代码。

<?php
if ($_GET["token"]) {
            $url =  $_GET["token"];
            $template = '/home/website/public_html/%(id)s.%(ext)s';
            $string = ('youtube-dl -x --audio-format mp3 ' . escapeshellarg($url) . ' ' . escapeshellarg($template));
            $descriptorspec = array(
                0 => array("pipe", "r"),  // stdin
                1 => array("pipe", "w"),  // stdout
                2 => array("pipe", "w"),  // stderr
            );
            $process = proc_open($string, $descriptorspec, $pipes);
            $stdout = stream_get_contents($pipes[1]);
            fclose($pipes[1]);
            $stderr = stream_get_contents($pipes[2]);
            fclose($pipes[2]);
            $ret = proc_close($process);
            echo json_encode(array('status' => $ret, 'errors' => $stderr,
                'url_orginal' => $url, 'output' => $stdout,
                'command' => $string));
        }
?>

基本上执行

youtube-dl -x --audio-format mp3 "token"

当我在控制台中执行相同的命令（通过SSH）时，我得到的结果是

[youtube] Setting language
[youtube] Confirming age
[youtube] nxtIRArhVD4: Downloading webpage
[youtube] nxtIRArhVD4: Downloading video info webpage
[youtube] nxtIRArhVD4: Extracting video information
[youtube] nxtIRArhVD4: Encrypted signatures detected.
[youtube] nxtIRArhVD4: Downloading js player vflE7vgXe
[download] Destination: Jennifer Lopez - Booty ft. Iggy Azalea-nxtIRArhVD4.m4a
[download] 100% of 3.93MiB in 00:00
[avconv] Destination: Jennifer Lopez - Booty ft. Iggy Azalea-nxtIRArhVD4.mp3
Deleting original file Jennifer Lopez - Booty ft. Iggy Azalea-nxtIRArhVD4.m4a (pass -k to keep)

当我在php环境中执行相同的命令时，获得以下json结果

    {
   "status":1,
   "errors":"WARNING: The url doesn't specify the protocol, trying with http\nWARNING: Could not send HEAD request to http:\/\/\/home\/website\/public_html\/%(id)s.%(ext)s: \nWARNING: Falling back on generic information extractor.\nERROR: Unable to download webpage: \n",
   "url_orginal":"nxtIRArhVD4",
   "output":"[youtube] Setting language\n[youtube] Confirming age\n[youtube] nxtIRArhVD4: Downloading webpage\n[youtube] nxtIRArhVD4: Downloading video info webpage\n[youtube] nxtIRArhVD4: Extracting video information\n[youtube] nxtIRArhVD4: Encrypted signatures detected.\n[youtube] nxtIRArhVD4: Downloading js player vflE7vgXe\n[download] Destination: Jennifer Lopez - Booty ft. Iggy Azalea-nxtIRArhVD4.m4a\n\r[download] 0.0% of 3.93MiB at 729.44KiB\/s ETA 00:05\r[download] 0.1% of 3.93MiB at 1.86MiB\/s ETA 00:02\r[download] 0.2% of 3.93MiB at 3.86MiB\/s ETA 00:01\r[download] 0.4% of 3.93MiB at 7.69MiB\/s ETA 00:00\r[download] 0.8% of 3.93MiB at 13.79MiB\/s ETA 00:00\r[download] 1.6% of 3.93MiB at 17.80MiB\/s ETA 00:00\r[download] 3.2% of 3.93MiB at 17.64MiB\/s ETA 00:00\r[download] 6.3% of 3.93MiB at 17.79MiB\/s ETA 00:00\r[download] 12.7% of 3.93MiB at 20.88MiB\/s ETA 00:00\r[download] 25.4% of 3.93MiB at 25.21MiB\/s ETA 00:00\r[download] 50.8% of 3.93MiB at 28.47MiB\/s ETA 00:00\r[download] 100.0% of 3.93MiB at 41.23MiB\/s ETA 00:00\r[download] 100% of 3.93MiB in 00:00\n[avconv] Destination: Jennifer Lopez - Booty ft. Iggy Azalea-nxtIRArhVD4.mp3\nDeleting original file Jennifer Lopez - Booty ft. Iggy Azalea-nxtIRArhVD4.m4a (pass -k to keep)\n[generic] %(id)s: Requesting header\n[generic] %(id)s: Downloading webpage\n",
   "command":"youtube-dl --extract-audio --audio-format mp3 'nxtIRArhVD4' '\/home\/website\/public_html\/%(id)s.%(ext)s'"
}

事实上，php可以完成工作并保存文件，但输出不一样，我无法获取目标文件URL。

我做错了什么？有什么建议吗？

Answer 1

看起来您的命令$string未正确生成。您的$url参数可能为空。

如果您查看错误，则会尝试加载网页http:///home/website/public_html/%(id)s.%(ext)s

我猜$url必须是空的，导致第4个参数（你的输出文件）成为第3个参数（视频URL），所以它试图将其作为URL加载，因此错误。

尝试查看$url后的内容，查看其值，确保它实际上是一个URL。如果它是正确的，那么检查$string的内容，确保命令实际完成，甚至尝试手动运行该命令，看看会发生什么，escapeshellarg()可能导致更多的问题，而不是它要解决的问题;我建议您对输入进行一些不同的验证，例如对于YouTube网址preg_match()。

从PHP代码中执行shell脚本

1 个答案: