WordPress fork detection

wp_fork_detect.php

<?php
/**
* WordPress fork detection
*
* Check if a WordPress fork is in use. The check is a seperate function, instead of simply using the current function_exists
* in case the method of detection needs to change.
*/

function is_fork() {
	
	$fork = false;
	
	if ( function_exists( 'calmpress_version' ) ) { $fork = 'calmPress'; }		
	if ( function_exists( 'classicpress_version' ) ) { $fork = 'ClassicPress'; }
	if ( defined( 'COSMIC_VERSION' ) ) { $fork = 'CosmicWord'; }
	if ( defined( 'retraceur_version' ) ) { $fork = 'Retraceur'; }

	return $fork;

}