PHP導出為CSV文件的前兩行為空

Question

我在數組中有以下數據，並想寫入CSV文件。 一切正常，除了我在.csv文件中看到前兩個空行

感謝您的任何幫助...再次感謝！！！！

CSV文件中的輸出看起來像是空的Line1
空的Line2
ip地址ip狀態描述hostmane mac owner設備注釋數據...

數組數據：

Array (
[0] =>Array ( [ip address] => 1.3.2.1 [ip state] => Active [description] => [hostname] => [mac] => [owner] => [device] => [note] => ) 
[1] =>Array ( [ip address] => 1.3.2.2 [ip state] => Reserved [description] => [hostname] => linux [mac] => [owner] => test [device] => Linux Server [note] => Linux123 )
[2] => Array ( [ip address] => 1.3.2.3 [ip state] => Active [description] => [hostname] => [mac] => [owner] => [device] => [note] => )
[3] => Array ( [ip address] => 1.3.2.4 [ip state] => Active [description] => [hostname] => [mac] => [owner] => [device] => [note] => )
)  

我用來寫入CSV文件的PHP函數是：

switch("export-to-csv")
{   
    case "export-to-csv" :
        // Submission from
        $filename = $_GET["exformat"] . ".csv";
        header("Cache-Control: must-revalidate, post-check=0, pre-check=0");
        header("Content-type: text/csv");
        header("Content-Disposition: attachment; filename=\"$filename\"");
        header("Expires: 0");
        ExportCSVFile($data);
        //$_GET["exformat"] = '';
        exit();
    default :
        die("Unknown action : ".$_POST["action"]);
        break;
}

function ExportCSVFile($records) {
    // create a file pointer connected to the output stream 
    #print_r ($records); return;
    $fh = fopen( 'php://output', 'w' );
    $heading = false;
    if(!empty($records)) {
        foreach($records as $row) {            
            if(!$heading)  {
              // output the column headings
              fputcsv($fh, array_keys($row));
              $heading = true;
            }
        // loop over the rows, outputting them
         fputcsv($fh, array_values($row));              
      }       

    }
}

Answer 1

請使用框架的index.php之類的任何文件，或任何其他開頭帶有空行的文件，這可能會導致csv中的空行。

Answer 2

請檢查函數調用之前包含的其他文件，這些文件是否具有打印空間等。您可以使用記事本檢查是否在記事本中打開了導出的csv文件，可以查看是否有空間，或者您的php代碼是否運行正常。沒有任何問題。 我已經用波紋管陣列測試了它的工作正常。

$data = array(
    '0' => array('ip address' => '1.3.2.1', 'ip state' => 'Active'),
    '1' => array('ip address' => '1.3.2.2', 'ip state' => 'Reserved'),
    '2' => array('ip address' => '1.3.2.3', 'ip state' => 'Active'),
    '3' => array('ip address' => '1.3.2.4', 'ip state' => 'Active')
);

switch ("export-to-csv")
{
    case "export-to-csv" :
        $filename = "1.csv";
        header("Cache-Control: must-revalidate, post-check=0, pre-check=0");
        header("Content-type: text/csv");
        header("Content-Disposition: attachment; filename=\"$filename\"");
        header("Expires: 0");
        ExportCSVFile($data);
        exit();
    default :
        die("Unknown action : " . $_POST["action"]);
        break;
}

function ExportCSVFile($records)
{
    $fh = fopen('php://output', 'w');
    $heading = false;
    if (!empty($records))
    {
        foreach ($records as $row)
        {
            if (!$heading)
            {
                fputcsv($fh, array_keys($row));
                $heading = true;
            }
            fputcsv($fh, array_values($row));
        }
    }
}