WordPress functions.php

In a WordPress theme, the file named functions.php contains custom programming functions for that theme.

Note that the file name functions.php begins with a lower-case f.

Do not be confused by the uppercase "F" title of this article: "Functions.php (WordPress)".

Description

The WordPress themes can provide custom functionality via functions.php.

Writing custom functions requires some knowledge of PHP programming, more than a beginning programmer is likely to know.

• However, beginning programmers may wish to study existing functions.php code from particular themes, to learn how functions work.
• It is often possible for a beginner to modify an existing function for some specific purpose

functions.php is optional. Not all themes have it.

Location

functions.php is located in the root of a WordPress theme folder.

See also

• Function (programming)
• WordPress
• WordPress theme