PHP Parse Json from HTTP response & Foreach Iterate Array - php

Question

There are several focused questions on this topic but after trying them all I felt the need to seek out help. I am using Sendgrid, their webhook sends a json response and for some reason I have been unable to figure out how to integrate with our CRM.
Update: 12/3/2015 # 1:01pm - I got some code to work (probably not the most efficient but it works) see below.
Example JSON from Sendgrid being sent:
[
{
"sg_message_id":"sendgrid_internal_message_id",
"email": "john.doe#sendgrid.com",
"timestamp": 1337197600,
"smtp-id": "<4FB4041F.6080505#sendgrid.com>",
"event": "spamreport"
},
{
"sg_message_id":"sendgrid_internal_message_id",
"email": "john.doe#sendgrid.com",
"timestamp": 1337966815,
"category": "newuser",
"event": "bounce",
"url": "https://sendgrid.com"
},
{
"sg_message_id":"sendgrid_internal_message_id",
"email": "john.doe#sendgrid.com",
"timestamp": 1337969592,
"smtp-id": "<20120525181309.C1A9B40405B3#Example-Mac.local>",
"event": "unsubscribe",
"asm_group_id": 42
}
]
The issue I am running into is that each array in the JSON pertains to a particular event. For example "Spam", or "Bounced" or "Unsubscribe". I've set it up so that only those three events are sent. However there is a possibility that someone will bounce first, then get it, then hit spam, then hit unsubscribe.
The simplest solution for this (disregarding a heirarchy system) is to have each of these events pass along to a specific field in our CRM. For example if the event = spam, then it would fill $spam with "spam". However if it is not present it should do nothing.
One last note, I have to pass a header across so that Sendgrid will stop spamming the script. Also I am not a coder, or programmer, I have just picked up a few things over the last few months.
My Script that Isn't Working:
<?php
$data = file_get_contents("php://input");
$events = json_decode($data, true);
require_once('Infusionsoft/infusionsoft.php');
$contact = new Infusionsoft_Contact();
$custom = array(
'_SGBounce',
'_SGSpam',
'_SGUnsub'
);
$contact->addCustomFields($custom);
if (is_array($events) || $events instanceof Traversable) {
foreach ($events as $event) {
$email = $event['email'];
if($event['event'] === 'bounce') {
$bounce = 'bounce';
} elseif ($event['event'] === 'spamreport') {
$spam = 'spam';
} elseif ($event['event'] === 'unsubscribe') {
$unsub = 'unsubscribe';
} else {
die echo header("HTTP/1.1 200 OK");
}
process_event($event);
}}
if (empty($email)) {
die echo header("HTTP/1.1 200 OK");
} else {
$contact->Email = $email;
$contact->_SGBounce = $bounce;
$contact->_SGSpam = $spam;
$contact->_SGUnsub = $unsub;
$contact->save();
}
header("HTTP/1.1 200 OK");
?>
I also have a script I am using that writes to a file, just to test and see if I can get the correct events to write. However I have been unsuccessful to get it to iterate past the first array. I've tried nesting the foreach() in another foreach() with a key => value solution posted in another answer here. However that was also a dead end.
Any tips, help, and guidance... would be greatly appreciated.
Update: Working Code Below (in case this helps someone)
<?php
$data = file_get_contents("php://input");
$events = json_decode($data, true);
require_once('Infusionsoft/infusionsoft.php');
$contact = new Infusionsoft_Contact();
$custom = array(
'_SendGrid',
);
$contact->addCustomFields($custom);
$emails = array();
$em = '';
if (is_array($events) || $events instanceof Traversable) {
foreach ($events as $event) {
$email = $event['email'];
$em = $email;
if($event['event'] === 'unsubscribe') {
$event = 'unsubscribe';
$unsubscribe = 'unsubscribe';
} elseif($event['event'] === 'spamreport') {
$event = 'spam';
$spam = 'spam';
} elseif($event['event'] === 'bounce') {
$event = 'bounce';
$bounce = 'bounce';
} else {
continue;
}
$default = array(
'bounce' => false,
'spam' => false,
'unsubscribe' => false
);
if(!is_null($event)) {
if(array_key_exists($email, $emails)) {
$entry = $emails[$email];
} else {
$entry = $default;
}
switch($event) {
case "bounce":
$entry['bounce'] = true;
break;
case "spam":
$entry['spam'] = true;
break;
case "unsubscribe":
$entry['unsubscribe'] = true;
break;
}
}
}}
if($unsubscribe === 'unsubscribe'){
$param = 'unsubscribe';
} elseif($spam === 'spam'){
$param = 'spam';
} elseif($bounce === 'bounce'){
$param = 'bounce';
} else {
echo header("HTTP/1.1 200 OK");
}
$contact->Email = $em;
$contact->_SendGrid = $param;
$contact->save();
header("HTTP/1.1 200 OK");
?>

Answer 1

What you could do, is process it like this;
$emails = array();
foreach ($events as $event) {
$email = $event['email'];
if($event['event'] === 'bounce') {
$event = 'bounce';
} elseif ($event['event'] === 'spamreport') {
$event = 'spam';
} elseif ($event['event'] === 'unsubscribe') {
$event = 'unsubscribe';
} else {
continue;
}
// Set defaults
$default = array(
'bounce' => false,
'spam' => false,
'unsubscribe' => false
);
if(!is_null($event)) {
if(array_key_exists($email, $emails)) {
$entry = $emails[$email];
} else {
$entry = $default;
}
switch($event) {
case "bounce":
$entry['bounce'] = true;
break;
case "spam":
$entry['spam'] = true;
break;
case "unsubscribe":
$entry['unsubscribe'] = true;
break;
}
}
}
Then you'd end up with a list of emails that are their own array with boolean values for keys bounce, spam and unsubscribe. You could do a loop over that array to save the data.