WordPress at a glance
function is not described

_() WP 1.0

If gettext isn't available.

This is an internal function for using it by WP core itself. It's not recommended to use this function in your code.

No Hooks.

Return

null. Nothing.

Usage

_( $string );
$string (required)
-

Code of _() WP 5.7.2

<?php
function _( $string ) {
	return $string;
}