Register Embed Handler for Padlet.com

Have you considered using a simpler regex such as:

'#^https?://padlet\.com/(\?.+)?$#'

Then breaking apart the latter section with explode to get the video ID?

Hata!: SQLSTATE[HY000] [1045] Access denied for user 'divattrend_liink'@'localhost' (using password: YES)