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@ 2015-07-14T10:07:54Z

<?php

$balls = [['001', '001', '003', '004', '005'],
    ['012', '004', '007', '010', '005'],
    ['011', '007', '009', '008', '005']];

$searchMatches = function($balls) {
    foreach ($balls as $rowNumber => $rowData) {
        $repeating = array_filter(array_count_values($rowData), function ($count) {
            return $count > 1;
        });
        if ($repeating) {
            $tmpRow = $rowData;
            foreach ($repeating as $value => $count) {
                for ($i = 1; $i <= $count; $i++) {
                    $index = array_search($value, $tmpRow);
                    $matchesRow[$rowNumber][$index] = $value;
                    unset($tmpRow[$index]);
                }
            }
        }
    }
    return $matchesRow;
};

$reverseBalls = [];
foreach($balls as $rowNumber => $rowData)
{
    $count =  count($rowData);
    for($i = 0; $i < $count; $i++)
    {
        $reverseBalls[$i][$rowNumber] = $rowData[$i];

    }
}

var_dump($searchMatches($balls));
var_dump($searchMatches($reverseBalls));

Output for git.master, git.master_jit, rfc.property-hooks: array(1) { [0]=> array(2) { [0]=> string(3) "001" [1]=> string(3) "001" } } array(1) { [4]=> array(3) { [0]=> string(3) "005" [1]=> string(3) "005" [2]=> string(3) "005" } }

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2020-03-21 RFC: Is_Literal - declined
2020-12-04 Enumerations - included in PHP 8.1
2018-06-15 Typed Properties v2 - implemented in PHP 7.4
2016-08-12 Object typehint - included in PHP 7.2
2016-08-14 Arrow functions - withdrawn
2016-05-29 array_change_keys() - withdrawn
2016-04-19 Lexical scope support for anonymous classes - suspended
2016-04-17 Functional Interfaces - declined
2016-03-16 Typed Properties - superseded in favor of Typed Properties 2.0
2015-08-27 Callable Prototypes - declined
2015-05-01 Short Closures - declined / withdrawn in favor of Arrow Functions
2015-02-18 Scalar type hints v5 - included in PHP 7
2015-02-14 Union Types - declined
2013-09-22 Anonymous classes - included in PHP 7

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