Simple phone validation for Restaurant Reservations

My Restaurant Reservations plugin does not require a phone number. Your online visitors might not want or ever need to give their phone number, so I left it optional to encourage more reservations.

But some restaurants might want to ask for a phone number. Maybe you make follow-up or reminder phone calls. Or maybe you just want to make sure you have a way to get in touch with them if they never show.

I’ve written a micro-plugin you can download and activate on your site that will required a phone number and perform some basic validation to see if it looks like a valid phone number.

To use this, download the file onto your computer, then upload the simple-phone-validation-for-rtb.php file to your website’s /wp-content/plugins/ directory. Once the file is there, you’ll be able to activate it by going to the Plugins page in your WordPress admin area. Find the plugin titled, Simple phone validation for Restaurant Reservations and activate it.

What does it do?

When a booking is received, it makes sure that a phone number has been entered. Then it checks to see if the phone number contains at least 5, but no more than 50, characters including numbers, spaces, dashes, periods and parentheses.

That’s a pretty wide range, but I kept it as open as possible because phone numbers are written differently in different countries. If you know valid phone numbers in your area will always be 8 numbers, you can easily change this. Find this line in the file:

preg_match( '/(\d[\s-()\.]*){5,50}\d/', $booking->phone, $matches );

Change the 5,50 part to any range you want. If you want it to be 8-10 characters (including spaces, dashes, periods and parentheses), you’d change it to:

preg_match( '/(\d[\s-()\.]*){8,10}\d/', $booking->phone, $matches );

Be careful, though. You don’t want to make it so strict that a potential diner gets frustrated. Some people write numbers with parentheses, some with spaces, some with dashes. Some people use full area codes. Some people just use local numbers. Make sure you’re not limiting it too much.

The simple validation is good enough to catch most mistakes, when the person making the reservation just forgot to enter their phone number or wrote their email address in the phone field by accident. It’s always a good idea to be generous when validating their phone number so that they don’t have to play a guessing game of how you expect it to be formatted.

Great. Now I want to…

My Gist account includes tons of little snippets which extend and modify my plugins and themes in useful ways. Take a look through the whole library if you’re looking for basic email validation, how to redirect after a successful reservation submission, modify options in the settings, customize the form and more.

Fair warning though, you’ll need to know how to upload and manage your PHP plugin files to use them properly.

Want more great tips like this? Follow me on Twitter or sign up for my mailing list.

Call to action box goes here
Need a Plugin to Improve Your Site?
Browse Plugins Now
Add Schema to any Page on Your Site
Add Schema to any Page on Your Site

If you’re looking to boost the SEO for you site, structured data, or schema, is a great way to do it. According to Google, “Structured data is a standardized format for providing information about a page and classifying the page content.” For example, you can use it to tell Google that a page contains FAQs,…

Add Your Business Profile to Your Site with Structured Data
Add Your Business Profile to Your Site with Structured Data

With the Five Star Business Profile and Schema WordPress plugin, you can quickly and easily create your business profile and add it to your site with a simple-to-use shortcode or Gutenberg block. This automatically includes all the relevant structured data, so Google knows exactly what type of organization/business it is and can include the correct…

Modifying the Five Star Restaurant Menu Plugin Using Templates
Modifying the Five Star Restaurant Menu Plugin Using Templates

The template system that exists in the Five Star Restaurant Menu WordPress plugin opens a whole new level of customization for those comfortable working with a bit of code. Everything that displays on the front end of the plugin can be customized by creating your own template files (to modify and/or overwrite the existing templates…

Discover More Posts
Browse Plugins Now