function _flipping_book_clean_filename in Flipping Book 7

Helper function to sanitize flipping_book filename

1 call to _flipping_book_clean_filename()

flipping_book_management_form_submit in includes/flipping_book.pages.inc

Submit callback.

File

includes/flipping_book.pages.inc, line 138

Flipping Book Pages.

Code

function _flipping_book_clean_filename($filename) {

  // Replace whitespace.
  $filename = str_replace(' ', '_', $filename);

  // Remove remaining unsafe characters.
  $filename = preg_replace('![^0-9A-Za-z_.-]!', '', $filename);

  // Remove multiple consecutive non-alphabetical characters.
  $filename = preg_replace('/(_)_+|(\\.)\\.+|(-)-+/', '\\1\\2\\3', $filename);

  // Force lowercase to prevent issues on case-insensitive file systems.
  $filename = strtolower($filename);
  return $filename;
}