Unset Element from Array IF - php

Question

I get some data from the database, which is saved in "$Data". $Data looks like this:
[Data] => Array
(
[0] => Array
(
[PrinterID] => 3
[PrinterName] => PRT03_EDV
[isDefaultPrinter] => 1
[isMapped] => 0
)
[1] => Array
(
[PrinterID] => 1
[PrinterName] => PRT01_Zentral
[isDefaultPrinter] => 0
[isMapped] => 1
)
[2] => Array
(
[PrinterID] => 2
[PrinterName] => PRT02_BH
[isDefaultPrinter] => 0
[isMapped] => 0
)
I need to verify, that there is no array in $Data, where "isDefaultPrinter == True" and "isMapped == False". Programatically:
if ( $Data["isDefaultPrinter"] == true and $Data["isMapped"] == false ) {
// Remove from Array
}
I did start to code this on my own based on this and my result was a terrible looking nested loop, which did not work :-(
I am a beginner and I wanted to ask, if there is an nice and easy way to do this?
Thank you

Answer 1

Here's a version using array_filter, which is sort of built for this. See http://php.net/manual/en/function.array-filter.php
$valid = array_filter($Data, function($var) {
return !($var['isDefaultPrinter'] && !$var['isMapped']);
});

Answer 2

Use foreach to loop over the data array:
foreach ($Data['Data'] as $entry) {
// Examine every entry
if ($entry['isDefaultPrinter'] && !$entry['isMapped']) {
// $entry does not meet criteria
}
}
You can write a function that verifies that every entry meets your criteria:
function validateData($Data) {
foreach ($Data['Data'] as $entry) {
// Examine every entry
if ($entry['isDefaultPrinter'] && !$entry['isMapped']) {
// $entry does not meet criteria
return false;
}
}
// Everything is OK
return true;
}
var_dump(validateData($Data));

Answer 3

You can use unset to remove the row of the array that doesn't fit your "keep" criteria. You need to know the array key to remove it tidily; this foreach with the $key value as well:
foreach ($var['Data'] as $key => $entry) {
// Examine every entry
if ($entry['isDefaultPrinter'] && !$entry['isMapped']) {
// $entry does not meet criteria
unset($var['Data'][$key]);
}
}
print_r($var); //output remaining values.
Once completed - and if you wish - you can then reindex the [outer] array using array_values():
$var['Data'] = array_values($var['Data']);