在php中保存由fopen（）函数创建的文件？

Question

我创建了一个文件，使用fopen（'contacts'，'w'）。 现在我想提示用户保存这个文件，他想在他的本地机器（使用PHP）。

任何建议或示例代码将不胜感激。

谢谢！

Answer 1

假设你的文件 - “接触”是一个物理文件是否存在，现在在服务器中。

<?php 
$file = 'contacts.csv'; 

if (file_exists($file)) { 
    header('Content-Description: File Transfer'); 
    header('Content-Type: application/octet-stream'); 
    header('Content-Disposition: attachment; filename='.basename($file)); 
    header('Content-Transfer-Encoding: binary'); 
    header('Expires: 0'); 
    header('Cache-Control: must-revalidate'); 
    header('Pragma: public'); 
    header('Content-Length: ' . filesize($file)); 
    ob_clean(); 
    flush(); 
    readfile($file); 
    exit; 
} 
?> 

编号：http://php.net/manual/en/function.readfile.php

Answer 2

下载代码

<?php 

// place this code inside a php file and call it f.e. "download.php" 
$path = $_SERVER['DOCUMENT_ROOT']."/path2file/"; // change the path to fit your websites document structure 
$fullPath = $path.$_GET['download_file']; 

if ($fd = fopen ($fullPath, "r")) { 
    $fsize = filesize($fullPath); 
    $path_parts = pathinfo($fullPath); 
    $ext = strtolower($path_parts["extension"]); 
    switch ($ext) { 
     case "pdf": 
     header("Content-type: application/pdf"); // add here more headers for diff. extensions 
     header("Content-Disposition: attachment; filename=\"".$path_parts["basename"]."\""); // use 'attachment' to force a download 
     break; 
     default; 
     header("Content-type: application/octet-stream"); 
     header("Content-Disposition: filename=\"".$path_parts["basename"]."\""); 
    } 
    header("Content-length: $fsize"); 
    header("Cache-control: private"); //use this to open files directly 
    while(!feof($fd)) { 
     $buffer = fread($fd, 2048); 
     echo $buffer; 
    } 
} 
fclose ($fd); 
exit; 
// example: place this kind of link into the document where the file download is offered: 
// <a href="download.php?download_file=some_file.pdf">Download here</a> 
?>