I have the following directory structure:

Root Install: /Users/philipdowner/Sites/montanaliving

Within the root installation I have the following plugin structure:


Then, within the plugin folder I have 2 php files manifest-rets.php phrets.php

In the main plugin file, I have the following code:

Plugin Name: Manifest RETS
Plugin URI: http://manifestbozeman.com
Description: Uses the phRETS library to connect to a RETS server
Version: 1.0b
Author: Philip Downer
Author URI:http://philipdowner.com
License: GPL2

define('MR_PLUGIN_PATH', plugin_dir_path(__FILE__));    



However, when running the plugin I get the following error stating that the phrets.php file could not be found. It's driving me batty! Any suggestions? Am I overlooking something obvious?

Warning: include_once(/Users/philipdowner/Sites/montanaliving/wp-content/plugins/manifest-rets/phprets.php) [function.include-once]: failed to open stream: No such file or directory in /Users/philipdowner/Sites/montanaliving/wp-content/plugins/manifest-rets/manifest-rets.php on line 15

Warning: include_once() [function.include]: Failed opening '/Users/philipdowner/Sites/montanaliving/wp-content/plugins/manifest-rets/phprets.php' for inclusion (include_path='.:/Applications/MAMP/bin/php/php5.3.6/lib/php') in /Users/philipdowner/Sites/montanaliving/wp-content/plugins/manifest-rets/manifest-rets.php on line 15

I've tried passing in the ABSPATH constant, and using PHP's set_include_path() function to no avail.

2 Answers 2


I'm not sure why this isn't working for you.

I usually set the plugin path constant using dirname(FILE)

You could try:

define('MR_PLUGIN_PATH', dirname(__FILE__));    



Are you sure phprets.php exists. You say you have phrets.php (missing the p)

  • plugin_dir_path is just a wrapper around dirname. It's body: return trailingslashit(dirname($file)); May 31, 2012 at 3:25

Sounds like a problem with the way MAMP is setup. Do you have any problems with any of the theme functions like get_template_directory()?

Try it this way and see what happens.

include_once dirname( __FILE__ ) . '/phprets.php';

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