我有一組結(jié)果，我想為它創(chuàng)建 csv 文件。但如果結(jié)果有效，我想將電子郵件添加到有效的 csv 文件中，如果它無效，則添加到無效的 csv 文件中。但我無法做到這一點(diǎn)。它將所有電子郵件添加到清理 csv 文件，無效的 csv 為空。有什么建議么結(jié)果是這樣的：Array(    [0] => Array        (            [email] => tamas.szabo@millionverifier.com            [result] => valid        )    [1] => Array        (            [email] => support@millionverifier.com            [result] => valid        ))這是我的條件// creating dirty and clean file$clean_emails = fopen(UPLOAD_DIRECTORY . '/clean/' . $file_name_new . '.' . $extension, 'w');$dirty_emails = fopen(UPLOAD_DIRECTORY . '/dirty/' . $file_name_new . '.' . $extension, 'w');// adding headers to themfputcsv($clean_emails, $headers);fputcsv($dirty_emails, $headers);            if ($results[$i]['result'] === 'valid') {    // adding clean emails to csv    foreach ($results as $row) {    fputcsv($clean_emails, $row);    }    fclose($clean_emails);} elseif ($results[$i]['result'] === 'invalid') {    // adding dirty emails to csv    foreach ($results as $row) {    fputcsv($dirty_emails, $row);    }    fclose($dirty_emails);} else {    // if there are not any dirty or clean emails add them unknown to csv    $unknown_emails = fopen(UPLOAD_DIRECTORY . '/unknown/' . $file_name_new . '.' . $extension, 'w');    fputcsv($unknown_emails, $row);    fclose($unknown_emails);}