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<?php // собираем массив с юзерами $arr = ['вася','петя','ваня','ира','лена','маша','маша','вася','ваня','света','ваня']; // формируем строку $str = implode('|', $arr); // для результата $res = []; foreach($arr as $key){ // проверяем сколько раз встречаете юзер в строке // и записываем его в массив где ключ - это юзер $res[$key]['score'] = mb_substr_count($str, $key); $res[$key]['key'] = $key; } // сортируем массив по убыванию rsort($res); echo "Топ репостер - " . $res[0]['key'] . "\n"; echo "Он репостнул - " . $res[0]['score'] . "\n\n"; print_r($res);
Output for git.master, git.master_jit, rfc.property-hooks
Топ репостер - ваня Он репостнул - 3 Array ( [0] => Array ( [score] => 3 [key] => ваня ) [1] => Array ( [score] => 2 [key] => маша ) [2] => Array ( [score] => 2 [key] => вася ) [3] => Array ( [score] => 1 [key] => света ) [4] => Array ( [score] => 1 [key] => петя ) [5] => Array ( [score] => 1 [key] => лена ) [6] => Array ( [score] => 1 [key] => ира ) )

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