Shortcodes Actions And Filters Plugin Need tutorial or instructions

I am somewhat of a newbee to wordpress and found the Shortcodes Actions And Filters Plugin to be the ideal plugin to check if someone has already registered using the same email.

I found code that will verify if an e-mail address has been used already.

I am not sure what to put in for $formname = ‘xxxx’ do I put in the url of the form ((https://tp4fe.org/?page_id=3859)), or do I put the short code of the contact form ([contact-form-7 id=”3874″ title=”Request to Raise Funds Form”]), or do I put the name of the form which includes spaces (Request to Raise Funds Form).

Additionally, there is a field named Execute only for. I am not sure what that is used for. A link to a tutorial or documentation would help this newbee greatly. Does that exist?

Please provide info.

the code is as follows:

**
* @param $formName string
* @param $fieldName string
* @param $fieldValue string
* @return bool
*/
function is_already_submitted($formName, $fieldName, $fieldValue) {
require_once(ABSPATH . ‘wp-content/plugins/contact-form-7-to-database-extension/CFDBFormIterator.php’);
$exp = new CFDBFormIterator();
$atts = array();
$atts[‘show’] = $fieldName;
$atts[‘filter’] = “$fieldName=$fieldValue”;
$atts[‘unbuffered’] = ‘true’;
$exp->export($formName, $atts);
$found = false;
while ($row = $exp->nextRow()) {
$found = true;
}
return $found;
}

/**
* @param $result WPCF7_Validation
* @param $tag array
* @return WPCF7_Validation
*/
function my_validate_email($result, $tag) {

$formName = ’email_form’; // Change to name of the form containing this field

$fieldName = ’email_123′; // Change to your form’s unique field name
$errorMessage = ‘Email has already been submitted’; // Change to your error message
$name = $tag[‘name’];
if ($name == $fieldName) {
if (is_already_submitted($formName, $fieldName, $_POST[$name])) {
$result->invalidate($tag, $errorMessage);
}
}
return $result;
}

// use the next line if your field is a **required email** field on your form
add_filter(‘wpcf7_validate_email*’, ‘my_validate_email’, 10, 2);
// use the next line if your field is an **email** field not required on your form
add_filter(‘wpcf7_validate_email’, ‘my_validate_email’, 10, 2);

// use the next line if your field is a **required text** field
add_filter(‘wpcf7_validate_text*’, ‘my_validate_email’, 10, 2);
// use the next line if your field is a **text** field field not required on your form
add_filter(‘wpcf7_validate_text’, ‘my_validate_email’, 10, 2);