/PHP/How to get only content-length with CURL PHP?

How to get only content-length with CURL PHP?

<?php
/**
 * Returns the size of a file without downloading it, or -1 if the file
 * size could not be determined.
 *
 * @param $url - The location of the remote file to download. Cannot
 * be null or empty.
 *
 * @return The size of the file referenced by $url, or -1 if the size
 * could not be determined.
 */
function curl_get_file_size( $url ) {
  // Assume failure.
  $result = -1;

  $curl = curl_init( $url );

  // Issue a HEAD request and follow any redirects.
  curl_setopt( $curl, CURLOPT_NOBODY, true );
  curl_setopt( $curl, CURLOPT_HEADER, true );
  curl_setopt( $curl, CURLOPT_RETURNTRANSFER, true );
  curl_setopt( $curl, CURLOPT_FOLLOWLOCATION, true );
  curl_setopt( $curl, CURLOPT_USERAGENT, get_user_agent_string() );

  $data = curl_exec( $curl );
  curl_close( $curl );

  if( $data ) {
    $content_length = "unknown";
    $status = "unknown";

    if( preg_match( "/^HTTP\/1\.[01] (\d\d\d)/", $data, $matches ) ) {
      $status = (int)$matches[1];
    }

    if( preg_match( "/Content-Length: (\d+)/", $data, $matches ) ) {
      $content_length = (int)$matches[1];
    }

    // http://en.wikipedia.org/wiki/List_of_HTTP_status_codes
    if( $status == 200 || ($status > 300 && $status <= 308) ) {
      $result = $content_length;
    }
  }

  return $result;
}
?>

Source: stackoverflow.com

Similar codes

1 vote133 views1 answer
What is app_env in laravel
PHP
17 votes156 views3 answers
Laravel order by desc
PHP Laravel
3 votes154 views4 answers
Csrf token mismatch laravel api
PHP Laravel
11 votes253 views1 answer
Wp error log config
PHP Wordpress
3 votes137 views2 answers
Replace multiple characters one string php
PHP
0 vote142 views1 answer
How to set select option value dynamically in php
PHP
37 votes131 views6 answers
Php time
PHP
0 vote146 views4 answers
Error": "Trying to get property 'id' of non-object" in laravel
PHP Laravel
5 votes161 views2 answers
Laravel blade upper case
PHP Laravel
25 votes140 views1 answer
Write php online
PHP