Prevent Administrative Admin Login from the MemberPress Login Form

block-admin-login-memberpress-login-form.php

<?php //* mind this opening php tag

/**
 * Snippet provided by MemberPress support and modified by Ren Ventura
 **/

//* Kick admins out from MemberPress login form
add_filter( 'mepr-validate-login', 'kick_out_admins' );
function kick_out_admins( $errors ) {
	
	extract( $_POST );

	// Check for login by email address
	if ( is_email( $log ) ) {
		$user = get_user_by( 'email', $log );
	} else {
		$user = get_user_by( 'login', $log );
	}

	if ( $user !== false && user_can( $user, 'delete_users' ) ) {
		$errors[] = "Admins cannot login via this form";
	}

	return $errors;
	
}