function file_upload_max_size in Drupal 7

Same name and namespace in other branches

1. 8 core/includes/file.inc \file_upload_max_size()
2. 4 includes/file.inc \file_upload_max_size()
3. 5 includes/file.inc \file_upload_max_size()
4. 6 includes/file.inc \file_upload_max_size()

Determines the maximum file upload size by querying the PHP settings.

Return value

A file size limit in bytes based on the PHP upload_max_filesize and post_max_size

Related topics

4 calls to file_upload_max_size()

file_ajax_upload in modules/file/file.module

Menu callback; Shared Ajax callback for file uploads and deletions.

file_field_instance_settings_form in modules/file/file.field.inc

Implements hook_field_instance_settings_form().

file_field_widget_upload_validators in modules/file/file.field.inc

Retrieves the upload validators for a file field.

file_save_upload in includes/file.inc

Saves a file upload to a new location.

File

includes/file.inc, line 2256

API for handling file uploads and server file management.

Code

function file_upload_max_size() {
  static $max_size = -1;
  if ($max_size < 0) {

    // Start with post_max_size.
    $max_size = parse_size(ini_get('post_max_size'));

    // If upload_max_size is less, then reduce. Except if upload_max_size is
    // zero, which indicates no limit.
    $upload_max = parse_size(ini_get('upload_max_filesize'));
    if ($upload_max > 0 && $upload_max < $max_size) {
      $max_size = $upload_max;
    }
  }
  return $max_size;
}