check-requried.php

<?php

// hooked inside a class for my normal dev work
add_action( 'admin_notices', 'check_required_plugins' );
	/**
	 * Checks for WooCommerce and kills our plugin if it isn't active
	 *
	 * @uses    function_exists     Checks for the function given string
	 * @uses    deactivate_plugins  Deactivates plugins given string or array of plugins
	 *
	 * @action  admin_notices       Provides WordPress admin notices
	 *
	 * @since   1.0
	 * @author  ME
	 */
	public function check_required_plugins(){

		if ( ! is_plugin_active( 'woocommerce/woocommerce.php' ) ) { ?>

			<div id="message" class="error">
				<p>Limit Products requires WooCommerce to be active. This plugin has been deactivated.</p>
			</div>

			<?php
			deactivate_plugins( '/limit-products/limit-products.php' );
		} // compmany team if

	} // check_required_plugins