jifola

Found a solution that works 🙂 Posted the answer in another thread.
https://wordpress.org/support/topic/custom-filter-in-php-and-cf7-custom-validation/#post-11370754

I got something that works. Finally 🙂 But it is with a very different approach. My only problem now is getting the error message to show. Any ideas please?

This is what i got so far. It is a bit heavy on the commenting, but i want everyone to know what is going on.

// Remember to change url* to what kind of field you are validating. * means it is a required field. Remove the * if it is not.
add_filter( 'wpcf7_validate_url*', 'my_duplicate_validation', 20, 2 );
function my_duplicate_validation($result, $tag) {

// Get the existing data
require_once(ABSPATH . 'wp-content/plugins/contact-form-7-to-database-extension/CFDBFormIterator.php');
$exp = new CFDBFormIterator();
$atts = array();
$atts['show'] = 'url-submit-input'; // Input name from your form
$atts['filter'] = 'Submitted From=my_ip_sorting()'; // Custom filter sorting by the current users IP address
$atts['unbuffered'] = 'true';
$exp->export($atts['url-submit-form'], $atts); // Name of your form
$rows = array(); // Make $rows to an array
while ($row = $exp->nextRow()) {
  $rows[] = $row; // Instead of creating output, just save the data into the array $rows made just before
}

// Get the current contact form
$wpcf7 = WPCF7_ContactForm::get_current();
	
// Get the submission, which is generated when the user hits the submit button
$submission = WPCF7_Submission::get_instance();
	
// if a submission is made
if ($submission) {
	
// Put the content of the submission into a variable called $posted_data
$posted_data = $submission->get_posted_data();
	
// Exit the function if the contact form is empty
if ( empty ($posted_data))
return;

// Put the content of a single input into a varible called $tag instead of the whole content from $posted_data
// You can change the name of $tag, but make sure you change it everywhere
// The name url-submit-input is the name of a input in my contact form
$tag = $posted_data['url-submit-input'];

// Check if the value that is submitted is already in the array of values that you pulled from your existing data
// Url-submit-input is also the name of the field that the data is stored in. Dont confuse it with the name of the input in your form	
// if(in_array(value to look for, array_column(array to look in, array column to look in)))
if(in_array($tag, array_column($rows, 'url-submit-input'))) {
	
    // If value submitted in form is found in the data saved in the array $rows. Then it is a duplicate by the current IP address
    // Invalidate and return error
    $result->invalidate($tag, "error" );

} else {
	
	// If value submitted in form is NOT found in the data saved in the array $rows then it is not a duplicate. Allow the form to send
	// Remember it is based on the IP address of the current user "$atts['filter'] = 'Submitted From=my_ip_sorting()';"
	return $result;
	
} // if in_array end
	
} // If $submission end
	
} // Function my_duplicate_validation end

And the custom filter made in Shortcodes, Actions and Filters.

require_once(ABSPATH . 'wp-content/plugins/contact-form-7-to-database-extension/CFDBPermittedFunctions.php');
function my_ip_sorting() {
    if ( ! empty( $_SERVER['HTTP_CLIENT_IP'] ) ) {
    //check ip from share internet
    $ip = $_SERVER['HTTP_CLIENT_IP'];
    } elseif ( ! empty( $_SERVER['HTTP_X_FORWARDED_FOR'] ) ) {
    //to check ip is pass from proxy
    $ip = $_SERVER['HTTP_X_FORWARDED_FOR'];
    } else {
    $ip = $_SERVER['REMOTE_ADDR'];
    }
	return $ip;
}
cfdb_register_function('my_ip_sorting');

It took me forever to get to this. I have been going at it for a week now. All i need now is to get the damn error message to display. Any help would be greatly appreciated.

• This reply was modified 5 years ago by jifola.