$re = '/(https?:\/\/(?:(?!https?:\/\/).)*)/';
$str = 'https://00e9e64bac25fa94607-apidata.googleusercontent.com/download/redacted?qk=AD5uMEnaGx-JIkLyJmEF7IjjU8bQfv_hZTkH_KOeaGZySsQCmdSPZEPHHAzUaUkcDAOZghttps://console.developers.google.com/project/reducted/?authuser=1\\n';
preg_match_all($re, $str, $matches, PREG_SET_ORDER, 0);
// Print the entire match result
var_dump($matches);
Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for PHP, please visit: http://php.net/manual/en/ref.pcre.php