Disable Event Espresso

<?php
/*
Plugin Name: Disable Event Espresso
Plugin URI: http://www.mzoo.org
Description:  Disables event espresso plugin files from calls to all but specified pages
Author: mZoo/Mike iLL
Version: 1.0
Author URI: http://www.mzoo.org
*/

add_filter( 'option_active_plugins', 'mz_disable_event_espresso_plugin' );

function mz_disable_event_espresso_plugin($plugins){

		$pages = array(
								'tennis/tennis-calendar',
								'tennis/adult-tennis/clinics',
								'fitness/fitness-calendar',
								'fitness/group-exercise/bodypump',
								'fitness/group-exercise/buti-yoga',
								'fitness/group-exercise/cross-train',
								'fitness/group-exercise/herman-walkers-body-design-system',
								'fitness/group-exercise/spinning',
								'fitness/group-exercise/indoorwalking',
								'fitness/group-exercise/insanity',
								'fitness/group-exercise/barre',
								'fitness/group-exercise/no-limits',
								'fitness/group-exercise/physique',
								'fitness/group-exercise/pilates',
								'events-calendar',
								'event-registration'
								);
			
			$test_pages = array(
										"attendee-list",
										"events-calendar",
										"schedule",
										"tippen-class-schedule-grid"
										);
								
			$plugins_to_disable = array(
					'espresso-calendar/espresso-calendar.php',
					'espresso-custom-templates/index.php',
					'espresso-members/espresso-members.php',
					'espresso-permissions-basic/espresso-permissions.php',
					'espresso-recurring/espresso-recurring-events.php',
					'espresso-social/espresso-social.php',
					'event-espresso/espresso.php',
					'event-espresso-core/espresso.php'
    			);
    
    if(strposa($_SERVER['REQUEST_URI'], $pages) === FALSE AND strpos($_SERVER['REQUEST_URI'], '/wp-admin/') === FALSE) {
    
			foreach ($plugins_to_disable as $plugin_to_remove){
			
				$key = array_search( $plugin_to_remove , $plugins );

				if ( false !== $key ) {
						unset( $plugins[$key] );
				}
			}
		}
		
		/*Uncomment this block to write out plugins for development
    if (strposa($_SERVER['REQUEST_URI'], $test_pages) === TRUE){
    	mZ__write_to_file($_SERVER['REQUEST_URI']);
    	mZ__write_to_file($plugins);
    }
    */
    
    return $plugins;
}

function strposa($haystack, $needle, $offset=0) {
    if(!is_array($needle)) $needle = array($needle);
    foreach($needle as $query) {
        if(strpos($haystack, $query, $offset) !== false) return true; // stop on first true result
    }
    return false;
}

function mZ__write_to_file($message)
{
    $header = "URL:\t ";

    if (is_array($message)) {
        $header = "\nPlugins:\n";
        $message = print_r($message, true);
    }

    file_put_contents(
        WPMU_PLUGIN_DIR . '/loaded_plugins.txt', 
        $header . $message, 
        FILE_APPEND | LOCK_EX
    );
}


?>