The Google Video embed handler callback.

Retrieves the caption for an attachment.

Returns the canonical URL for a post.

Retrieves the list of common file extensions and their types.

Return an array of sites for a network or networks.

Helper function to test if aspect ratios for two images match.

Determines whether a PHP ini value is changeable at runtime.

Localizes the jQuery UI datepicker.

Email login credentials to a newly-registered user.

Outputs JS that reloads the page if the user navigated to it with the Back or Forward button.