页面时间间隔刷新

Question

$output_filename = "work.txt";

    $host = "http://www.indeed.com/l-Cuyahoga-Falls,-Ohio-jobs.html";
    $ch = curl_init();
    curl_setopt($ch, CURLOPT_URL, $host);
    curl_setopt($ch, CURLOPT_VERBOSE, 1);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
    curl_setopt($ch, CURLOPT_AUTOREFERER, false);
    curl_setopt($ch, CURLOPT_HTTP_VERSION, CURL_HTTP_VERSION_1_1);
    curl_setopt($ch, CURLOPT_HEADER, 0);
    $result = curl_exec($ch);
    curl_close($ch);

    print_r($result); // prints the contents of the collected file before writing..

    // the following lines write the contents to a file in the same directory (provided permissions etc)
    $fp = fopen($output_filename, 'w');
    fwrite($fp, $result);
    fclose($fp);

它会在您上载脚本的目录中创建一个文件。然后它显示文件中的数据。但我很难尝试自动刷新间隔。我需要它自动更新。

如何整个页面下载？当我运行脚本时，很多图像有时不会一直显示出来。这是导致这种情况的网站吗？