如何在PHP中从多维数组中找到两个最小的行数和列数

$array = array(
    array(5, 8, 2),
    array(3, 9, 4),
    array(1, 7, 6)
);

$helperArray = array();
foreach ($array as $rowIndex => $row) {
    foreach ($row as $colIndex => $value) {
        $helperArray[] = array(
            'value' => $value,
            'row' => $rowIndex,
            'col' => $colIndex
        );
    }
}

usort($helperArray, function($a, $b) {
    return $a['value'] - $b['value'];
});

$minRow1 = $helperArray[0]['row'];
$minCol1 = $helperArray[0]['col'];
$minRow2 = $helperArray[1]['row'];
$minCol2 = $helperArray[1]['col'];

echo "最小的两个行列索引为：($minRow1, $minCol1) 和 ($minRow2, $minCol2)";