How to group image order by time from array - php

Question

I have array of photo with filename and time. I want to find the photos which are taken in hour. For example, I have photos taken from 10.00, 10.15, 10.59. So when I search. I want these photo to be listed under 10.00.
I think it's something to do with in_array or array_search. But I still don't have an idea how.
Here is my array: $pixArr[]
Array
(
[0] => Array
(
[file] => IMG_7519.JPG
[time] => 13:02
)
[1] => Array
(
[file] => IMG_7518.JPG
[time] => 13:01
)
[2] => Array
(
[file] => IMG_7517.JPG
[time] => 13:00
)
[3] => Array
(
[file] => IMG_7516.JPG
[time] => 11:39
)
[4] => Array
(
[file] => IMG_7515.JPG
[time] => 11:39
)
[5] => Array
(
[file] => IMG_7514.JPG
[time] => 11:38
)
[6] => Array
(
[file] => IMG_7513.JPG
[time] => 11:29
)
[7] => Array
(
[file] => IMG_7512.JPG
[time] => 11:26
)
[8] => Array
(
[file] => IMG_7511.JPG
[time] => 11:26
)
)
I expect it coming out something like this:
10:00
listPhoto.php
<?
//now how to list files by hour???
?>

Answer 1

you may use array_filter As #u_mulder suggested:
<?php
$pixArr = array
(
0 => array
(
'file' => 'IMG_7519.JPG',
'time' => '13:02'
),
1 => array
(
'file' => 'IMG_7518.JPG',
'time' => '13:01'
),
2 => array
(
'file' => 'IMG_7517.JPG',
'time' => '13:00'
),
3 => array
(
'file' => 'IMG_7516.JPG',
'time' => '11:39'
),
4 => array
(
'file' => 'IMG_7515.JPG',
'time' => '11:39'
),
5 => array
(
'file' => 'IMG_7514.JPG',
'time' => '11:38'
),
6 => array
(
'file' => 'IMG_7513.JPG',
'time' => '11:29'
),
7 => array
(
'file' => 'IMG_7512.JPG',
'time' => '11:26'
),
8 => array
(
'file' => 'IMG_7511.JPG',
'time' => '11:26'
),
);
print_r(array_filter($pixArr, function($value){
if($value['time'] >= '11:00' && $value['time'] <= '12:00')
return $value;
}));
See Demo: https://eval.in/513466

Answer 2

you can using assort This function sorts an array such that array indices maintain their correlation with the array elements they are associated with.
I have been tried this problem.
$arr = [
[
"file" => "IMG_7519.JPG",
"time" => "13:02"
],
[
"file" => "IMG_7519.JPG",
"time" => "12:02"
],
[
"file" => "IMG_7519.JPG",
"time" => "15:02"
]
];
asort($arr); //sorting array
echo "<pre>".print_r($arr)."</pre>";
and this is the result.
Array ( [1] => Array ( [file] => IMG_7519.JPG [time] => 12:02 ) [0] => Array ( [file] => IMG_7519.JPG [time] => 13:02 ) [2] => Array ( [file] => IMG_7519.JPG [time] => 15:02 ) )