PHP - Help Needed Creating Array in a Loop - php

Question

I'm processed some JSON data that is sent via HTTP POST to my PHP file. I then need to extract some elements and create a PHP array containing these, so I can then loop through this array and perform some actions.
Here's a sample of how the JSON data that is sent looks:
[
{
"fileName": "Invoices",
"event": "processed",
"serverName": "server1.acme.com",
"timestamp": 1574229999
},
{
"fileName": "Invoices",
"event": "processed",
"serverName": "server2.acme.com",
"timestamp": 1574228341
},
{
"fileName": "Payments",
"event": "processed",
"hostname": "server3.acme.com",
"timestamp": 1574766997
}
]
I'm then decoding this to parse out just the elements I need:
$payload = #file_get_contents('php://input');
$records= json_decode( $payload, FALSE );
$sessionsArray = array();
foreach($records as $record){
$hostname = $record->hostname;
$fileName = $record->fileName;
// need to add these to the $sessionsArray for each iteration of the loop
}
I would like to create a new array $sessionsArray and add the $hostname and $fileName variables to this for each iteration in the foreach loop. I then intend to do another foreach on the $sessionsArray and perform some actions using the $hostname and $fileName for each element of the array.
I'm stuck on how to add the variables within the first foreach loop to the $sessionsArray array so I can then subsequently loop through that array.

Answer 1

foreach($records as $record){
$sessionsArray[] = [
'hostname' => $record->hostname,
'fileName' => $record->fileName,
];
}
And then you can do:
foreach($sessionsArray as $entry){
$hostname = $entry['hostname'];
$fileName = $entry['fileName'];
}
=== OR ===
foreach($records as $record){
$sessionsArray[$record->hostname] = $record->fileName;
}
and then you can do:
foreach($sessionsArray as $hostname => $fileName){
// $hostname contains the hostname
// $filename contains filename
}
Just FYI, based on the JSON object you provided your code SHOULD be:
$hostname = $record->serverName;
$fileName = $record->fileName;

Answer 2

$sessionsArray = array();
foreach($records as $key => $record){
$sessionsArray[$key]['hostname'] = $record->hostname;
$sessionsArray[$key]['fileName'] = $record->fileName;
}

Answer 3

You need to get the last key of sessionsArray before every loop and pass that last key while adding to variable.
Here is example:
$sessionsArray = !empty($sessionsArray)?$sessionsArray:[];
$continueKey = (#array_pop(array_keys($sessionsArray)))?#array_pop(array_keys($sessionsArray))+1:0;
foreach($records as $record){
$sessionsArray[$continueKey]['hostname'] = $record->hostname;
$sessionsArray[$continueKey]['fileName'] = $record->fileName;
}