Title: [Plugin: Fast Secure Contact Form] server-side validation
Last modified: August 20, 2016

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# [Plugin: Fast Secure Contact Form] server-side validation

 *  [kfukawa](https://wordpress.org/support/users/kfukawa/)
 * (@kfukawa)
 * [14 years, 5 months ago](https://wordpress.org/support/topic/plugin-fast-secure-contact-form-server-side-validation/)
 * I need to perform more complex form validation beyond the basic regex that is
   available. Is it possible to test form input on the server side using php?
 * Specifically, I need to be able to confirm that a user’s collector card number
   is a valid one, using a technique that is similar to credit card number testing.
 * Thanks.
 * [http://wordpress.org/extend/plugins/si-contact-form/](http://wordpress.org/extend/plugins/si-contact-form/)

Viewing 5 replies - 1 through 5 (of 5 total)

 *  Thread Starter [kfukawa](https://wordpress.org/support/users/kfukawa/)
 * (@kfukawa)
 * [14 years, 5 months ago](https://wordpress.org/support/topic/plugin-fast-secure-contact-form-server-side-validation/#post-2453623)
 * If server side validation is beyond the scope of this plugin, does anyone know
   how to add client-side validation beyond the basic regex offered by the plugin?
 * I have a hard time believing that I’m the only person using this plugin who requires
   more complex validation than regex…
 * Thanks.
 *  [Mike Challis](https://wordpress.org/support/users/mikechallis/)
 * (@mikechallis)
 * [14 years, 4 months ago](https://wordpress.org/support/topic/plugin-fast-secure-contact-form-server-side-validation/#post-2453636)
 * You can edit the contact-form-process.php and hack your own code in there.
    You
   would need to trigger the processing of your code based on the extra field number
   you are using for the collector card number. if you have multiple forms on the
   site you would also need to trigger by form number also.
 *  Thread Starter [kfukawa](https://wordpress.org/support/users/kfukawa/)
 * (@kfukawa)
 * [14 years, 4 months ago](https://wordpress.org/support/topic/plugin-fast-secure-contact-form-server-side-validation/#post-2453641)
 * Hi Mike,
 * Thanks for your reply.
 * Do you have any examples or code snippets on how to hack the code for custom 
   validation?
 * I guess if the only solution is to hack the core files, then any customization
   would be overwritten by a plugin upgrade, wouldn’t it?
 * Thanks again for your help.
 *  [Mike Challis](https://wordpress.org/support/users/mikechallis/)
 * (@mikechallis)
 * [14 years, 4 months ago](https://wordpress.org/support/topic/plugin-fast-secure-contact-form-server-side-validation/#post-2453642)
 * custom code is a bit time consuming, I do not have the time, sorry.
    yes, any
   customization would be overwritten by a plugin upgrade
 *  Thread Starter [kfukawa](https://wordpress.org/support/users/kfukawa/)
 * (@kfukawa)
 * [14 years, 4 months ago](https://wordpress.org/support/topic/plugin-fast-secure-contact-form-server-side-validation/#post-2453644)
 * Hi again,
 * I guess I’ll have to start from scratch instead of using a plugin. Oh well, thanks
   again for your help. If I didn’t have the custom validation requirement, your
   plugin would have been perfect.
 * Keep up the good work!

Viewing 5 replies - 1 through 5 (of 5 total)

The topic ‘[Plugin: Fast Secure Contact Form] server-side validation’ is closed 
to new replies.

 * ![](https://s.w.org/plugins/geopattern-icon/si-contact-form_dde2be.svg)
 * [Fast Secure Contact Form](https://wordpress.org/plugins/si-contact-form/)
 * [Frequently Asked Questions](https://wordpress.org/plugins/si-contact-form/#faq)
 * [Support Threads](https://wordpress.org/support/plugin/si-contact-form/)
 * [Active Topics](https://wordpress.org/support/plugin/si-contact-form/active/)
 * [Unresolved Topics](https://wordpress.org/support/plugin/si-contact-form/unresolved/)
 * [Reviews](https://wordpress.org/support/plugin/si-contact-form/reviews/)

 * 5 replies
 * 2 participants
 * Last reply from: [kfukawa](https://wordpress.org/support/users/kfukawa/)
 * Last activity: [14 years, 4 months ago](https://wordpress.org/support/topic/plugin-fast-secure-contact-form-server-side-validation/#post-2453644)
 * Status: not resolved