laravel array groupBy specific column value - arrays

Question

I'm working with arrays in laravel and I have a result like this:
$datesArr = [ {
"day": "monday",
"date": "2021-05-03"
},
{
"day": "monday",
"date": "2021-05-10"
},
{
"day": "monday",
"date": "2021-05-17"
}
]
what I want is this:
{
"day": "monday",
"dates" : [
{"date": "2021-05-03"},
{"date": "2021-05-10"},
{"date": "2021-05-17"},
]
}

Answer 1

Hope to help you (should convert all to array)
public static function buildArrayGroupBy($key, $data , $lockKey = null) {
$result = array();
foreach($data as $val) {
if(array_key_exists($key, $val)){
if(!is_null($lockKey)){
$result[$val[$key]][] = $val[$lockKey];
}else{
$result[$val[$key]][] = $val;
}
}else{
$result[""][] = $val;
}
}
return $result;
}

Answer 2

You can use Laravel Collection's groupBy function.
The output will be in the format below but it'll do the job.
$datesArr = [
"monday" => [
{
"day": "monday",
"date": "2021-05-03"
},
{
"day": "monday",
"date": "2021-05-10"
},
{
"day": "monday",
"date": "2021-05-17"
}
]
]
For exact output like mentioned, You can use mapToGroups.
$data->mapToGroups(function($i) {
return ['day' => $i['day'],
'dates' => [
'date' => $i['date']
]];
});
P.S: You might have to change it a little bit according to your requirements.

Answer 3

Thank you to all that tried to help me. I came with an idea how to solv it.
I will try to explain it here.
First I got all days that I have stored. then:
$daysArr = array();
foreach($days as $key => $day){
$datesArr = array();
for($i = 0;$i< 8;$i++){
$newDate['date'] = now()->next($key)->addWeeks($i)->toDateString();
array_push($datesArr,$newDate);
}
$test['day'] = $key;
$test['dates'] = $datesArr;
array_push($daysArr,$test);
unset($datesArr);
}
return $daysArr;
I did double array_push and foreach "new day" , I unset $datesArr to get empty array for pushing new dates of "new day".
Hope I was clear enough!

Answer 4

Let's generate some dummy data based on your requirements:
foreach(range(1,100) as $rangeTbs){
$carbon = \Carbon\Carbon::now()
->addDays(rand(1,20))
->addMonths(rand(1,2));
$dateArrayTbs[] = [
'day' => $carbon->format('l'),
'date' => $carbon->format('Y-m-d'),
];
}
Now we can convert array into collection:
$collection = collect($dateArrayTbs)
//Grouping By day
->groupBy('day')
//Now Converting into Desired Format
->map(function(Collection $collection,$day){
return [
'day' => $day,
'dates' => $collection->sortBy('date')->toArray(),
];
});