我正在嘗試建立一種無需使用Twitter的API即可獲取某人的Twitter ID的工具。在我的示例中，我的用戶名是quixthe2nd。因此，如果您在此鏈接中輸入某人的Twitter用戶名：https://twitter.com/quixthe2nd/profile_image?size=original它將重定向到：https://pbs.twimg.com/profile_images/1116692743361687553/0P-dk3sF.jpgID為1116692743361687553。在后面列出https://pbs.twimg.com/profile_images/。我的代碼是：$url = "https://twitter.com/quixthe2nd/profile_image?size=original";function get_redirect_target($url){    $ch = curl_init($url);    curl_setopt($ch, CURLOPT_HEADER, 1);    curl_setopt($ch, CURLOPT_NOBODY, 1);    curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);    $headers = curl_exec($ch);    curl_close($ch);    // Check if there's a Location: header (redirect)    if (preg_match('/^Location: (.+)$/im', $headers, $matches))        return trim($matches[1]);    // If not, there was no redirect so return the original URL    // (Alternatively change this to return false)    return $url;}function get_redirect_final_target($url){    $ch = curl_init($url);    curl_setopt($ch, CURLOPT_NOBODY, 1);    curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 1); // follow redirects    curl_setopt($ch, CURLOPT_AUTOREFERER, 1); // set referer on redirect    curl_exec($ch);    $target = curl_getinfo($ch, CURLINFO_EFFECTIVE_URL);    curl_close($ch);    if ($target)        return $target;    return false;}    $s = $target;    if(preg_match('/profile_images\/\K[^\/]+/',$s,$matches)) {        print($matches[0]);    }我的代碼什么都不輸出。我將如何通過PHP來抓取呢？