Teste curl_wrap with Agile CRM in PHP

JustGetContactAgile.php

<?php
// Test Agile curl_wrap
require 'php-api-master/curlwrap_v2.php';

$email = "some@email.com";

// Try get contact from Agile
$contact = curl_wrap("contacts/search/email/" . $email, null, "GET");

// Get contatct Agile
$contact = json_decode(json_encode(array_filter((array)json_decode($contact))));

//echo $contato->properties[0]['name'];
echo "<pre>";
//var_dump($contact->properties[0]->value);
var_dump($contact);
echo "</pre>";

Hi! Nice code written there! :)

On Line #5, suppose I am sending out emails/newsletter with hyperlink buttons (that will then automatically update the contact's properties), how do we programmatically retrieve the contact's email from the hyperlink buttons?

Because over here we're kinda like hardcoding an email address to $email, as a test case.

Thanks for your help! And sorry I'm a beginner at programming so I'm a bit lost :/