Send enrollment notification to admin and instructors

coursepress-send-enrollment-notification-to-admin.php

<?php
add_action( 'coursepress_email_sent-enrollment_confirm', function( $args, $result ){

	$course_id = $args['course_id'];
	$send_to = array( get_option('admin_email') );	

	$course_title = get_the_title( $course_id );
	$course_instructors = array();
	$instructors = (array) CoursePress_Data_Course::get_setting( $course_id, 'instructors', array() );
	$instructors = array_filter( $instructors );

	if ( ! empty( $instructors ) ) {
		foreach ( $instructors as $instructor_id ) {
			$instructor = get_userdata( $instructor_id );
			$send_to[] = $instructor->user_email;
		}
	}

	$send_to = array_unique( $send_to, SORT_REGULAR );

	$args['intructor_subject'] = 'New student for course ' . $course_title;

	ob_start();
	?>
	Hi,
	A new student has enrolled for course <strong>"<?php echo $course_title; ?>"</strong>!
	<p>
	<u>Student info</u>:<br />
	<strong>First name: </strong><?php echo $args['first_name']; ?><br />
	<strong>Last name: </strong><?php echo $args['last_name']; ?><br />
	<strong>Student email: </strong><?php echo $args['email']; ?><br />
	</p> 
	<?php
	$intructor_message = ob_get_clean();

	$args['intructor_message'] = $intructor_message;

	foreach( $send_to as $email_to ){

		$email = array(
			'to' => apply_filters(
				'coursepress_email_to_address',
				sanitize_email( $email_to ),
				$args
			),
			'subject' => apply_filters(
				'coursepress_email_subject',
				sanitize_text_field( $args['intructor_subject'] ) ,
				$args
			),
			'message' => apply_filters(
				'coursepress_email_message',
				$args['intructor_message'],
				$args
			),
			'headers' => apply_filters(
				'coursepress_email_headers_to_instructor',
				array(
					'Content-Type: text/html; charset=UTF-8',
				)
			)
		);

		try {
				$result = wp_mail(
					$email['to'],
					$email['subject'],
					$email['message'],
					$email['headers']
				);
		} catch(phpmailerException $e) {
			$result = false;
		}
	}

}, 10, 2 );