Cycling an array and delete item - php

Question

I need help :)
I've to code a script that, cycling through an array inside an array , delete an element if in XXX field there isn't value (is NULL ).
My array is:
Array (
[idCampaign] => 3
[idIT] => 322
[recipients] =>Array (
[0] => stdClass Object ( [name] => minnie [email] => blabla#gmail.com [XXX] => )
[1] => stdClass Object ( [name] => [email] => fddd#gmail.it [XXX] => 0.88451100 )
) ) [date] => MongoDate Object ( [sec] => 1468503103 [usec] => 0 ) )
In this example the item [0] has no value in XXX value so my output array will be:
Array (
[idCampaign] => 3
[idIT] => 322
[recipients] =>Array (
[1] => stdClass Object ( [name] => [email] => fddd#gmail.it [XXX] => 0.88451100 )
) ) [date] => MongoDate Object ( [sec] => 1468503103 [usec] => 0 ) )
i hope that you can help me :)

Answer 1

You could use a nested foreach() Loop to cycle through the Data and then perform some tests, which on failing, guarantees that it is safe to unset the pertinent variable. Here's how:
<?php
// WE SIMULATE SOME DATA TO POPULATE THE ARRAY, ONLY FOR TESTING PURPOSES
$objDate = new stdClass();
$objRez1 = new stdClass();
$objRez2 = new stdClass();
$objRez1->name = "minnie";
$objRez1->email = "blabla#gmail.com";
$objRez1->XXX = null;
$objRez2->name = null;
$objRez2->email = "fddd#gmail.it";
$objRez2->XXX = 0.88451100;
$objDate->sec = 1468503103;
$objDate->usec = 0;
// IN THE END WE NOW HAVE A SAMPLE ARRAY (SIMULATED) TO WORK WITH.
$arrData = array(
'idCampaign' => 3,
'idIT' => 322,
'recipients' => array(
$objRez1,
$objRez2
),
'date' =>$objDate,
);
// LOOP THROUGH THE ARRAY OF DATA THAT YOU HAVE
// NOTICE THE &$data IN THE LOOP CONSTRUCT...
// THIS IS NECESSARY FOR REFERENCING WHEN WE UNSET VARIABLES WITHIN THE LOOP
foreach($arrData as $key=>&$data){
// SINCE THE XXX KEY IS STORED IN THE 'recipients' ARRAY,
// WE CHECK IF THE CURRENT KEY IS 'recipients' & THAT $data IS AN ARRAY
if($key == "recipients" && is_array($data)){
// NOW WE LOOP THROUGH THE DATA WHEREIN THE 'XXX' KEY LIVES
foreach($data as $obj){
// IF THE VALUE OF THE XXX KEY IS NULL OR NOT SET,
// WE SIMPLY UNSET IT...
if(!$obj->XXX){
unset($obj->XXX);
}
}
}
}
var_dump($arrData);
You can verify the Results HERE.
Hope this could offer you a little tip on how to implement it rightly on your own...

Answer 2

This should do the job
foreach($arrayOfObjects as $index => $object){
if(!isset($object->xxx) || empty($object->xxx)){
unset($arrayOfObjects[$index]);
}
}