在PHP中检查CSV中的部分重复

<?php
// 读取CSV文件
$csvFile = 'data.csv';
$csvData = [];
if (($handle = fopen($csvFile, 'r')) !== false) {
    while (($row = fgetcsv($handle)) !== false) {
        $csvData[] = $row;
    }
    fclose($handle);
}

// 检查重复数据
$repeatedData = [];
foreach ($csvData as $row) {
    $count = array_count_values($row);
    foreach ($count as $value => $occurrences) {
        if ($occurrences > 1) {
            $repeatedData[] = $row;
            break;
        }
    }
}

// 处理重复数据
$uniqueData = array_unique($csvData, SORT_REGULAR);

// 输出结果
echo "重复数据：\n";
foreach ($repeatedData as $row) {
    echo implode(',', $row) . "\n";
}

echo "去重后的数据：\n";
foreach ($uniqueData as $row) {
    echo implode(',', $row) . "\n";
}
?>