Title: Regex method (Important) Last modified: June 18, 2024 --- # Regex method (Important) * Resolved [Yash Kumar](https://wordpress.org/support/users/yashkumar4443/) * (@yashkumar4443) * [1 year, 9 months ago](https://wordpress.org/support/topic/regex-method-important/) * Suppose I have created name field, in which i want to implement regex method for letters only, No numeric value should be passed on submission It shoukd immediately show an error to the user. Viewing 4 replies - 1 through 4 (of 4 total) * Plugin Support [Laura – WPMU DEV Support](https://wordpress.org/support/users/wpmudev-support8/) * (@wpmudev-support8) * [1 year, 9 months ago](https://wordpress.org/support/topic/regex-method-important/#post-17832489) * Hi [@yashkumar4443](https://wordpress.org/support/users/yashkumar4443/) * I hope you’re well today! * You can use code like this for custom validation: * ``` add_filter( 'forminator_custom_form_submit_errors', 'forminator_custom_validate_field', 99, 3 ); function forminator_custom_validate_field( $submit_errors, $form_id, $field_data_array ) { $form_ids = array( 3010 ); // IDs of forms to check; if more than one, separate by comma $fields = array( 'name-1' ); // list of fields to validate $error_msg = 'Invalid field'; // custom error message if ( in_array( $form_id, $form_ids ) ) { foreach( $field_data_array as $arr ) { if ( in_array( $arr['name'], $fields ) ) { // YOUR VALIDATION CODE GOES HERE // THE VALUE THAT YOU WANT TO CHECK is in $arr['value']; // example below will issue form error if field contains string TEXT if ( strpos( $arr['value'], 'TEXT' ) !== false ) { // issue error $submit_errors[][$arr['name']] = $error_msg; } } } } return $submit_errors; } ``` * You would need to set your form ID, field IDs and error message and put your own validation code inside (see comments in code) and it will do the trick, showing general error above the form and your custom error directly below the validated field. * Kind regards, Adam * Plugin Support [Laura – WPMU DEV Support](https://wordpress.org/support/users/wpmudev-support8/) * (@wpmudev-support8) * [1 year, 9 months ago](https://wordpress.org/support/topic/regex-method-important/#post-17848829) * Hi [@yashkumar4443](https://wordpress.org/support/users/yashkumar4443/) * We didn’t hear back from you for quite some time already so I hope that suggested solution worked for you. * I’m marking this topic as resolved then but if you have any follow-up questions, don’t hesitate to ask. * Best regards, Adam * Thread Starter [Yash Kumar](https://wordpress.org/support/users/yashkumar4443/) * (@yashkumar4443) * [1 year, 8 months ago](https://wordpress.org/support/topic/regex-method-important/#post-17938675) * Ohh, Hi there, Sorry I missed the notifications, Thanks much for your help, But still it isn’t works the way I want, Actually i am having two fields, name and email in one form, and any user is passing anything in both the fields. for e. g below – Name – jhhggfhfh(or number 786876886687) * Email – [nfhgffytfft@jgjgjhg.com](https://wordpress.org/support/topic/regex-method-important/nfhgffytfft@jgjgjhg.com?output_format=md) I need help to fix this….Please help, below is my code, I have modified –************************************************************ * ```wp-block-code add_filter( 'forminator_custom_form_submit_errors', 'forminator_custom_validate_field', 99, 3 );function forminator_custom_validate_field( $submit_errors, $form_id, $field_data_array ) { // Define the form ID to check $form_ids = array( 13152 ); // Form ID(s) to check // Define the fields to validate $fields = array( 'name-1', 'email-1' ); // List of fields to validate // Define the error message $error_msg = 'Invalid input'; // Custom error message // Check if the current form is in the list of form IDs if ( in_array( $form_id, $form_ids ) ) { foreach( $field_data_array as $arr ) { if ( in_array( $arr['name'], $fields ) ) { // YOUR VALIDATION CODE GOES HERE // The value that you want to check is in $arr['value']; // Example validation: Check if field 'name-1' contains the string 'TEXT' if ($arr['name'] === 'name-1' && strpos( $arr['value'], 'TEXT' ) !== false) { // Issue error if validation fails $submit_errors[][$arr['name']] = $error_msg; } // Example validation: Check if email field 'email-1' is not a valid email address if ($arr['name'] === 'email-1' && !filter_var($arr['value'], FILTER_VALIDATE_EMAIL)) { // Issue error if validation fails $submit_errors[][$arr['name']] = 'Invalid email address'; } } } } return $submit_errors;} ``` * Plugin Support [Nithin – WPMU DEV Support](https://wordpress.org/support/users/wpmudevsupport11/) * (@wpmudevsupport11) * [1 year, 8 months ago](https://wordpress.org/support/topic/regex-method-important/#post-17941231) * Hi [@yashkumar4443](https://wordpress.org/support/users/yashkumar4443/), * There isn’t any way to validate based on what users manually type other than setting rules on what could be entered ie for example not allowing numbers for the Name field and only allowing valid domains for email ie only from Gmail, outlook etc * ```wp-block-code