How to include WordPress functions in custom .php file?

Question

How can I include WordPress functions in a custom .php file?

In detail: I have a directory under my theme (Constructor) named reports. These contain

Answer 1

External files can easily access the WordPress functions. You just need to include the file wp-load.php in your external file. The wp-load.php file is located in root of your WordPress installation. Example: Suppose your file is test.php located at root directory of WordPress installation.

<?php
require_once('wp-load.php');
// Your custom code
?>

Source: How to access WordPress functions in external file

Answer 2

require_once(dirname(__FILE__) . '/options.php');

This is better way to include a file in WordPress.

Answer 3

To use wp functions in custom .php files, you must include wp-load.php in your file. You can do so by adding the following line:

require_once(PATH_TO.'/wp-load.php');

If WordPress is in the document root add instead:

require_once($_SERVER['DOCUMENT_ROOT'].'/wp-load.php');

Answer 4

Well if someone has newer PHP versions installed (ver >= 5.5.x) then they can also try the below code in the root script in WordPress website directory itself:

<?php
define("WP_ROOT", __DIR__);
define("DS", DIRECTORY_SEPARATOR);
require_once WP_ROOT . DS . "wp-load.php";

Or

<?php
define("WP_ROOT", __DIR__);
define("DS", DIRECTORY_SEPARATOR);
require_once WP_ROOT . DS . "wp-blog-header.php";

I guess this is a more direct and clean approach and doesn't involve manually adding slashes and changing diretories by ...

Hope this helps someone.

Answer 5

I use this method to load WordPress environment outside WordPress.

  if (file_exists($_SERVER['DOCUMENT_ROOT'] . '/wp-load.php')) {

      /** Loads the WordPress Environment and Template */
      require_once($_SERVER['DOCUMENT_ROOT'] . '/wp-load.php');

  }

Answer 6

You're on the right track. Try this instead:

require_once("../../../../wp-load.php");