Wordpress PHP to notify of missing plugins

gistfile1.php

// R E Q U I R E S
// The list of required plugins
$md_csa_required_plugins = array(
	array( // ACF
		'func' => 'get_field',
		'call' => 'md_notify_acf',
	),
	array( // ACF Repeater
		'func' => 'acf_register_repeater_field',
		'call' => 'md_notify_acf_repeater',
	),
	array( // ACF Options
		'func' => 'acf_set_options_page_title',
		'call' => 'md_notify_acf_options',
	),
	array( // Genesis Taxonomy Images
		'func' => 'gtaxi_activation',
		'call' => 'md_notify_genesis_taxonomy_images',
	),
	array( // Custom Taxonomy Order NE
		'func' => 'customtaxorder_register_settings',
		'call' => 'md_notify_custom_taxonomy_order_ne',
	),
);

//------------------------------------------------------------------------------
// Check to ensure that all required plugins are installed
function md_check_for_required_plugins () {
	global $md_csa_required_plugins;
   	foreach ( $md_csa_required_plugins as $plugin ) {
		if(!function_exists($plugin['func'])) {
	   		add_action( 'admin_notices', $plugin['call'] );
		}
   	}
}
md_check_for_required_plugins();