我应该如何在 csv 导出中用“-”替换任何空值 - PHP

Question

public function exportCsv()
    {
        $this->download_send_headers("subscriber_list_export_" . date("Y-m-d") . ".csv");
        $model = $this->getModel('clientsdatas');
        $array = $model->getCsvArray();
        echo $this->array2csv($array);  
        die();
    }

    function array2csv(array &$array)
    {
        if (count($array) == 0) {
            return null;
        }
        ob_start();
        $df = fopen("php://output", 'w');
        fputcsv($df, array_keys(reset($array)));
        foreach ($array as $row) {
            $row['id'] = '="' . $row['id'] . '"';
            fputcsv($df, $row);
        }

        fclose($df);
        return ob_get_clean();
    }

    function download_send_headers($filename) {
        // disable caching
        $now = gmdate("D, d M Y H:i:s");
        header("Expires: Tue, 03 Jul 2001 06:00:00 GMT");
        header("Cache-Control: max-age=0, no-cache, must-revalidate, proxy-revalidate");
        header("Last-Modified: {$now} GMT");
    
        // force download  
        header("Content-Type: application/force-download");
        header("Content-Type: application/octet-stream");
        header("Content-Type: application/download");
    
        // disposition / encoding on response body
        header("Content-Disposition: attachment;filename={$filename}");
        header("Content-Transfer-Encoding: binary");
    }
}

Answer 1

如果您认为问题是 PHP 或 CSV，您可能没有注意数据源，因为可以根据需要查询数据，而无需操作数组：

CASE WHEN column IS NULL THEN "-" ELSE column END AS column

我应该如何在 csv 导出中用“-”替换任何空值 - PHP

How am I supposed to replace any null values with "-" in csv export - PHP

php

export-csv