cannot print values - using PHP - php

Question

I am trying to print date values before form submission but it did not print anything and submitted the form, below is my code
function webforms_save_submission_alter(&$fields, $context)
{
foreach ($fields as $key => $value) {
if (in_array($key, ["Date_Prototype__c", "Date_Production__c", "NBIOT_Date_of_Field_Trial__c", "NBIOT_Date_Lab_Trial__c"])){
$fields[$key] = trim($value);
print_r($fields); // printing here
if ($fields[$key] == 'Date_Production__c') {
$fields[$key] = format_date(strtotime($fields['Date_Production__c']), 'medium', 'm-d-Y');
print_r($fields); // printing here
die;
}
I want to see the date reactions before submitting the form but why it did not print anythign? can someone please help me on this?
Your help will be highly appreciated..

Answer 1

There are a number of problems with that code, which I suspect you've only written to debug a problem? It's much too complicated for that. Also, die is a function, and needs to be called with parentheses; Syntax errors are also a likely reason for why your code did nothing. Check your watchdog logs.
Try this code instead:
function webforms_save_submission_alter(&$fields, $context)
{
var_dump($fields);
die();
}