Perform Matrix Division in PHP

<?php
function printMatrix(array $matrix): void
{
    foreach ($matrix as $row) {
        foreach ($row as $value) {
            echo number_format((float)$value, 2) . "\t";
        }
        echo "\n";
    }
}

function matrixDivision(array $matrixA, array $matrixB): array
{
    $result = [];
    for ($i = 0; $i < count($matrixA); $i++) {
        for ($j = 0; $j < count($matrixA[$i]); $j++) {
            $result[$i][$j] = $matrixA[$i][$j] / $matrixB[$i][$j];
        }
    }
    return $result;
}

$matrixA = [[4.0, 8.0], [2.0, 6.0]];
$matrixB = [[2.0, 4.0], [1.0, 3.0]];

$result = matrixDivision($matrixA, $matrixB);
echo "Result of matrix division:\n";
printMatrix($result);
?>

<?php
function safeMatrixDivision(array $a, array $b): array
{
    $rows = count($a);
    if ($rows !== count($b)) {
        throw new InvalidArgumentException("Matrices must have same row count.");
    }

    $result = [];
    for ($i = 0; $i < $rows; $i++) {
        if (count($a[$i]) !== count($b[$i])) {
            throw new InvalidArgumentException("Matrices must have same column count in each row.");
        }

        for ($j = 0; $j < count($a[$i]); $j++) {
            if ((float)$b[$i][$j] == 0.0) {
                throw new DivisionByZeroError("Cannot divide by zero at [$i][$j].");
            }
            $result[$i][$j] = $a[$i][$j] / $b[$i][$j];
        }
    }

    return $result;
}

$matrixA = [[6.0, 9.0], [12.0, 15.0]];
$matrixB = [[3.0, 3.0], [4.0, 5.0]];

try {
    $result = safeMatrixDivision($matrixA, $matrixB);
    foreach ($result as $row) {
        echo implode(" ", array_map(fn($v) => number_format((float)$v, 2), $row)) . "\n";
    }
} catch (Throwable $e) {
    echo "Error: " . $e->getMessage() . "\n";
}
?>