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这个方法是视频解析的方法，弄了两天终于成功了，使用php在后台解析某视频平台的视频并进行引用。 演示地址：https://jiayu.mybabya.com/post/5368.html

一、先模拟浏览器User-Agent
因为很多网站对浏览用户是做了反爬虫过滤的，所以我们需要先对我们的post和get数据进行模拟浏览器行为。我这里把常用的浏览器User-Agent做成了一个随机模块。

/*
 * 随机User-Agent浏览器标识模块
 * */
function useragent_code()
{
    $b = rand(1, 10);
    if ($b == 1) {
        $ua = "Mozilla/5.0(Macintosh;U;IntelMacOSX10_6_8;en-us)AppleWebKit/534.50(KHTML,likeGecko)Version/.1Safari/534.50";
    }
    if ($b == 2) {
        $ua = "Mozilla/5.0(Windows;U;WindowsNT6.;en-us)AppleWebKit/534.50(KHTML,likeGecko)Version/.1Safari/534.50";
    }
    if ($b == 3) {
        $ua = "Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:45.0) Gecko/20100101 Firefox/45.0";
    }
    if ($b == 4) {
        $ua = "Opera/9.80(Macintosh;IntelMacOSX10.6.8;U;en)Presto/2.8.131Version/11.11";
    }
    if ($b == 5) {
        $ua = "Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:88.0) Gecko/20100101 Firefox/88.0";
    }
    if ($b == 6) {
        $ua = "Opera/9.80(WindowsNT6.;U;en)Presto/2.8.131Version/11.11";
    }
    if ($b == 7) {
        $ua = "Mozilla/5.0(Macintosh;IntelMacOSX10_7_0)AppleWebKit/535.11(KHTML,likeGecko)Chrome/17.0..56Safari/535.11";
    }
    if ($b == 8) {
        $ua = "Mozilla/5.0(iPhone;U;CPUiPhoneOS4_3_3likeMacOSX;en-us)AppleWebKit/533.17.(KHTML,likeGecko)Version/5.0.2Mobile/8J2Safari/6533.18.";
    }
    if ($b == 9) {
        $ua = "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/47.0.2526.106 Safari/537.36";
    }
    if ($b == 10) {
        $ua = "Mozilla/5.0 (compatible; MSIE 10.0; Windows NT 6.1; Trident/6.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0)";
    }
    return $ua;
}

二、模拟浏览器header文件头，因为要过反爬虫机制，所以必须要模拟文件头，意思是模拟一个正常用户浏览的行为。获取网站文件头的方法可以使用浏览器中的F12键调出开发者工具，在“网络”块，找到这个用户的首页地址，单击并查看右侧的“消息头”，在这里有协议，header文件头，cookie等信息，填写下方这代码里就可以了。

/**
 * 模拟浏览器开始访问请求
 * @param $url
 * @return bool|string
 */
function fetch_url($url) 
{
    $header = video_code($url);
    $timeout = 120;
    $ch = curl_init($url);
    curl_setopt($ch, CURLOPT_FAILONERROR, true);
    //设置请求头信息
    curl_setopt($ch, CURLOPT_HTTPHEADER, $header);
    //不取得返回头信息
    curl_setopt($ch, CURLOPT_HEADER, 0);
    // 关闭https验证
    curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
    curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, false);
    curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);
    curl_setopt($ch, CURLOPT_ENCODING, "");
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
    curl_setopt($ch, CURLOPT_AUTOREFERER, true);
    curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, $timeout);
    curl_setopt($ch, CURLOPT_TIMEOUT, $timeout);
    curl_setopt($ch, CURLOPT_MAXREDIRS, 10);
    curl_setopt($ch, CURLOPT_USERAGENT, useragent_code());
    $content = curl_exec($ch);
    if (curl_errno($ch)) {
        echo 'Error:' . curl_error($ch);
    } else {
        return $content;
    }
    curl_close($ch);
}
/*
 * 视频平台的文件头
 **/
function video_code($url)
{
    if (stripos($url, "toutiao", 0) !== false) {
        $iurl = str_replace("替换1", "替换2", $url);
        $iurl = str_replace("/a", "/", $iurl);
        $url = $iurl;
    }
    if (stripos($url, "?wid_try=1", 0) !== false || stripos($url, "?", 0) !== false) {
        $web = text_capture($url, "https://", "/"); //获取 用于HOST
        $id = text_capture($url, "m/", "?"); // 获取链接ID，用于 filename
        $ic = stripos($url, "?", 0);
        $ii = substr($url, 0, $ic) . "?wid_try=1"; //获取完整链接，用于Referer
    } else {
        $web = text_capture($url, "https://", "/"); // 用于HOST
        $id = text_capture($url, "m/", "?"); // 获取链接ID，用于 filename
        $ii = $url . "?wid_try=1";
    }
    $header = array(
        "POST {$ii} HTTP/2.0",
        "Host: {$web} ",
        "filename: {$id} ",
        "Referer: {$ii} ",
        "Content-Type: text/html",
        'Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3',
        'Accept-Encoding:gzip, deflate, br',
        'Accept-Language:zh-CN,zh;q=0.8,zh-TW;q=0.7,zh-HK;q=0.5,en-US;q=0.3,en;q=0.2',
        'Connection:keep-alive',
        'Cookie: *******************************',
        'User-Agent: '.useragent_code(),
    );

    return $header;
}

三、获取链接ID，我这里使用一个分割模块来进行操作。

/*
 * 文本截取，第一个参数为需要截取的总个文本，第二个参数为需要截取的左边，第三个参数为需要截取的右边，返回被截取的文本
 * */

function text_capture($txt, $left, $right)
{
    #$ix = substr($txt, strlen($left)+strpos($txt, $left),(strlen($txt) - strpos($txt, $right))*(-1));
    $b = substr($txt, 0, stripos($txt, $left, 0) + strlen($left));
    $i = str_replace($b, "", $txt);
    $ie = stripos($i, $right, 0);
    if ($ie !== false) {
        $ip = strlen($i) - $ie;
        $d = substr($i, $ie, $ie + $ip);
        $ix = str_replace($d, "", $i);
    } else {
        $ix = $i;
    }
    return $ix;
}

四、后台生成播放器代码

$id = "<video src=\"$ide\" type=\"video/mp4\" controls=\"controls\" width=\"640\" height=\"370\"></video><br>";