Why my array is increamenting php laravel 5 - php

Question

I have an array which contains data from the database:
$responses = FormResponses::where('form_id', '>=', $phoneFirstElement->id)->where('form_id', '<=', $phoneLastElement->id)->get();
$responsesArray = $responses->toArray();
Then my nested loop:
foreach ($phone as $key => $value2) // Populate Phone Numbers Horizontally
{
$sheet->cell($start.'9', $value2->phone);
// This will fill the responses for each number
foreach ($metrics as $key => $value)
{
$form_id = $value2->id;
$metrics_id = $value->id;
$neededObjects = array_filter(
$responsesArray,
function ($e) use ($form_id, $metrics_id) {
return $e['form_id'] == $form_id && $e['metrics_id'] == $metrics_id;
}
);
var_dump($neededObjects);
exit;
//$responses = FormResponses::where('form_id', '=', $value2->id)->where('metrics_id', '=', $value->id)->get();
//$sheet->cell($start.$count, $neededObjects[$counter]['response']);
$sheet->cell('C'.$count, $value->question);
$sheet->cell('B'.$count, $value->description);
$sheet->cell('A'.$count, $value->metrics_name);
$counter++;
$count++;
$neededObjects = array();
}
$start++;
$count = 10;
//$counter = 0;
}
My $responsesArray is the data which has lots of record, so I want to extract those data to get the specific one I need using array_filter and storing it in
$neededObjects
However when I make a var_dump I get something like
array (size=1)
0 =>
array (size=7)
'id' => int 141730
'form_id' => int 4430
'metrics_id' => int 1
'response' => string 'Yes' (length=3)
'remarks' => string '' (length=0)
'created_at' => string '2015-11-23 19:30:07' (length=19)
'updated_at' => string '2015-11-23 19:30:07' (length=19)
Then when the next records loops in
array (size=1)
1 =>
array (size=7)
'id' => int 141731
'form_id' => int 4430
'metrics_id' => int 2
'response' => string 'Yes' (length=3)
'remarks' => string '' (length=0)
'created_at' => string '2015-11-23 19:30:07' (length=19)
'updated_at' => string '2015-11-23 19:30:07' (length=19)
I don't understand why it is increamenting. The first one is 0 then next is 1 . Yes given that I am making an array_filter inside a nested loop but I didn't put any inreament vairables to it and the array filter will aways give me 1 record of data so I am expecting it atleast to be in index 0 or just a format like this:
array (size=7)
'id' => int 141731
'form_id' => int 4430
'metrics_id' => int 2
'response' => string 'Yes' (length=3)
'remarks' => string '' (length=0)
'created_at' => string '2015-11-23 19:30:07' (length=19)
'updated_at' => string '2015-11-23 19:30:07' (length=19)

Answer 1

Any results that are returned by array_filter maintain their old keys. If you want the keys to reset then apply array_values to the result.
If you only want one result then call current() or array_pop() on the result to get the first record.
Even if array_filter returns one record, it will still be in the original array with the same key.

Answer 2

array_filter returns the array elements with their keys intact depending upon your filter function. So the keys (0, 1 etc) are the keys in your original array. Use array_pop to get the only element in your array.