Ouptuts the numeric ID for the current entry in context.
Behind the scenes in the database, the
mt_entry table has a column called
entry_id column is a unique number that is auto-incremented. This unique auto-incremented number is the ID returned by this tag.
pad(optional; default “0”): Adds leading zeros to create a 6 character string. The default is “0” (false). This is equivalent to using the
zero_padglobal filter with a value of “6”.