How to process an array through foreach?

Question

Good day to all.

The task is as follows: by key, find the maximum value of the array and remove from the array all elements whose key is less than the maximum.

The array looks like this.

Array ( [response] => Array ( [count] => 41 [items] => Array ( [0] => Array ( [id] => 12345 [from_id] => 12345 [date] => 1480622801 [text] => Text [likes] => Array ( [count] => 0 ) ) ...

I found a way to find the maximum value of the array -

 foreach($members['response']['items'] as $k => $val){ $array_ataj[] = $val['likes']['count']; } echo max($array_ataj);

But at the same time, I don’t know to leave the array with the maximum value (that is, to get the keys and values returned) .. I ask for help in this matter.

Anton Shchyrov Anton Shchyrov 23.5k 2 14 44 · Accepted Answer · 2016-12-02T11:58:40

 $max = null; foreach($members['response']['items'] as $k => $val){ $cnt = $val['likes']['count']; if (!isset($max) || ($max < $cnt)) $max = $cnt; } // Перенумеровываем ключи $members['response']['items'] = array_merge($members['response']['items']); for ($i = count($members['response']['items']) - 1; $i >= 0; $i--) { if ($members['response']['items'][$i]['likes']['count'] < $max) unset($members['response']['items'][$i]) } // Перенумеровываем ключи $members['response']['items'] = array_merge($members['response']['items']);

Answer 2 · 2016-12-02T11:57:12

Well, of course, I didn’t really understand the essence of the question and cannot comment, but

 $max = 0; $id = array(); foreach($members['response']['items'] as $k=>$v){ if($v['likes']['count'] > $max){ $max = $v['likes']['count'];//Сначала нужно установить максимум } } foreach($members['response']['items'] as $k=>$v){ if($v === $max){ $id[] = $k; //Затем находим все элементы кол-во лайков у которых соответствует максимуму } } $random_array = $members['response']['items'][array_rand($id)];//так получится случайная запись foreach($id as $k=>$v){//а так можно работать с каждой $entry_id = $id[$k]; //номер записи из $members $likes = $members['response']['items'][$entry_id][likes][count]; //количество лайков $entry_array = $members['response']['items'][$entry_id]; //сам массив из $members }

It seems almost like that, only how instead of $ id to get an array of this record
I left it because there was no indication if there would be more than one.

How to process an array through foreach?

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