PHP -显示两个CSV文件之间的差异

$file1 = fopen('file1.csv', 'r');
$file2 = fopen('file2.csv', 'r');

$data1 = [];
$data2 = [];

while (($row = fgetcsv($file1)) !== false) {
    $data1[] = $row;
}

while (($row = fgetcsv($file2)) !== false) {
    $data2[] = $row;
}

fclose($file1);
fclose($file2);

$difference = [];

foreach ($data1 as $row1) {
    $found = false;
    
    foreach ($data2 as $row2) {
        if ($row1 == $row2) {
            $found = true;
            break;
        }
    }
    
    if (!$found) {
        $difference[] = $row1;
    }
}

echo '<table>';
echo '<tr><th>Column 1</th><th>Column 2</th><th>Column 3</th></tr>';

foreach ($difference as $row) {
    echo '<tr>';
    echo '<td>' . $row[0] . '</td>';
    echo '<td>' . $row[1] . '</td>';
    echo '<td>' . $row[2] . '</td>';
    echo '</tr>';
}

echo '</table>';