Free Online Tutorials

Part 1: PHP: How to get size of a remote file

With a local file, we can get file size of it by using filesize, but with a remote file, how to get size of a remote file?

We offer some methods to get size of a remote file.

Method 7:

<?php

/**
 * @author tutorialspots.com
 * @copyright 2015
 */

function get_size($url)
{
    $curl = curl_init();
    curl_setopt($curl, CURLOPT_URL, $url);
    curl_setopt($curl, CURLOPT_HEADER, true);
    curl_setopt($curl, CURLOPT_NOBODY, true);
    curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);
    curl_setopt($curl, CURLOPT_TIMEOUT, 10);
    curl_exec($curl);
    $data = curl_getinfo($curl);
    return isset($data["download_content_length"])?$data["download_content_length"]:false;
}
?>

Note: after use curl_getinfo, we get the data

array(20) {
  ["url"]=>
  string(57) "http://tutorialspots.com/wp-content/uploads/2013/04/1.png"
  ["content_type"]=>
  string(9) "image/png"
  ["http_code"]=>
  int(200)
  ["header_size"]=>
  int(283)
  ["request_size"]=>
  int(89)
  ["filetime"]=>
  int(-1)
  ["ssl_verify_result"]=>
  int(0)
  ["redirect_count"]=>
  int(0)
  ["total_time"]=>
  float(0.758)
  ["namelookup_time"]=>
  float(0.375)
  ["connect_time"]=>
  float(0.571)
  ["pretransfer_time"]=>
  float(0.571)
  ["size_upload"]=>
  float(0)
  ["size_download"]=>
  float(0)
  ["speed_download"]=>
  float(0)
  ["speed_upload"]=>
  float(0)
  ["download_content_length"]=>
  float(3955)
  ["upload_content_length"]=>
  float(0)
  ["starttransfer_time"]=>
  float(0.758)
  ["redirect_time"]=>
  float(0)
}

Method 8: similar as method 7

<?php

/**
 * @author tutorialspots.com
 * @copyright 2015
 */

function get_size($url)
{
    $curl = curl_init();
    curl_setopt($curl, CURLOPT_URL, $url);
    curl_setopt($curl, CURLOPT_CUSTOMREQUEST, 'HEAD');
    curl_setopt($curl, CURLOPT_HEADER, true); 
    curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);
    curl_setopt($curl, CURLOPT_TIMEOUT, 10);
    curl_exec($curl);
    $data = curl_getinfo($curl);
    return isset($data["download_content_length"])?$data["download_content_length"]:false;
}
?>

Method 9: use get_headers

<?php

/**
 * @author tutorialspots.com
 * @copyright 2015
 */

function get_size($url)
{
    if (function_exists('version_compare') && version_compare(phpversion(), '5.3.0') > 0)
    {
        stream_context_set_default(array('http' => array('method' => 'HEAD')));
    }
    $data = get_headers($url);
    foreach ($data as $header)
    {
        if (strpos($header, 'Content-Length:') === 0)
        {
            return trim(substr($header, 16));
        }
    }
    return false;
}
?>