PHP CSV创建并强制下载

Question

这是针对该文件的csv文件创建和强制下载。

这个工作，但我需要知道它是否正确的方式。

公共职能exportCSV（$结果）{

try { 

     $filename = CSV_PATH.'file.csv'; 

     $numRows = count($results); 

     $handle = fopen($filename, 'w+') or die("can't open file"); 

     fputcsv($handle, array('id','name','age','address')); 

     foreach ($results as $row) { 

      fputcsv($handle, $row); 
     } 

     fclose($handle); 

     header('Content-Disposition: attachment; filename="'.basename($filename).'"'); 
     header('Content-Transfer-Encoding: binary'); 
     header('Content-Length: '.filesize($filename)); 
     header('Connection: close'); 
     readfile($filename); 
     exit(); 

    } catch(Exception $e) { 
     echo $e->getMessage(); 
    } 
} 

CSV_PATH是config.php文件

Answer 1

use string rather then file writing it causes lot of overhead. 
    $out = ""; 
    $out .= implode(",", array('id','name','age','address')) . "\r\n"; 

    foreach ($results as $row) { 
     $out .= implode(",", $row) . "\r\n"; 
    } 

现在做的一样。

.... 
header('Connection: close'); 
echo $out;