Retrieves the number of posts a user has written.

Get the week start and end from the datetime or date string from MySQL.

Verifies that an email is valid.

Determines whether the publish date of the current post in the loop is different from the publish date of the previous post in the loop.

Print list of pages based on arguments.

Show the link to the links popup and the number of links.

Lists categories.

Converts plaintext URI to HTML links.

Strip HTML and put links at the bottom of stripped content.

Convert given MySQL date string into a different format.