如何使用 php 将多个文件下载为 zip 文件?
ZipArchive
类创建 ZIP 文件并将其流式传输到客户端。比如:
$files = array('readme.txt', 'test.html', 'image.gif');
$zipname = 'file.zip';
$zip = new ZipArchive;
$zip->open($zipname, ZipArchive::CREATE);
foreach ($files as $file) {
$zip->addFile($file);
}
$zip->close();
并进行流式传输:
header('Content-Type: application/zip');
header('Content-disposition: attachment; filename='.$zipname);
header('Content-Length: ' . filesize($zipname));
readfile($zipname);
第二行强制浏览器向用户呈现一个下载框并提示名称 filename.zip。第三行是可选的,但某些(主要是较旧的)浏览器在某些情况下在未指定内容大小的情况下会出现问题。
这是用 PHP 制作 ZIP 的工作示例:
$zip = new ZipArchive();
$zip_name = time().".zip"; // Zip name
$zip->open($zip_name, ZipArchive::CREATE);
foreach ($files as $file) {
echo $path = "uploadpdf/".$file;
if(file_exists($path)){
$zip->addFromString(basename($path), file_get_contents($path));
}
else{
echo"file does not exist";
}
}
$zip->close();
创建一个zip文件,然后下载该文件,通过设置标题,读取zip内容并输出文件。
http://www.php.net/manual/en/function.ziparchive-addfile.php
您已准备好使用 php zip lib, 并且也可以使用 zend zip lib,
<?PHP
// create object
$zip = new ZipArchive();
// open archive
if ($zip->open('app-0.09.zip') !== TRUE) {
die ("Could not open archive");
}
// get number of files in archive
$numFiles = $zip->numFiles;
// iterate over file list
// print details of each file
for ($x=0; $x<$numFiles; $x++) {
$file = $zip->statIndex($x);
printf("%s (%d bytes)", $file['name'], $file['size']);
print "
";
}
// close archive
$zip->close();
?>
http://devzone.zend.com/985/dynamically-creating-compressed-zip-archives-with-php/
还有 php pear lib 用于此目的 http://www.php.net/manual/en/class.ziparchive.php
我打开该 zip 文件时会出现此弹出窗口 加载存档时发生错误。 给出解决方案 我的代码
if (isset($_POST['selectedFiles'])) {
// Handle form submission
$selectedFiles = $_POST['selectedFiles'];
$zip = new ZipArchive();
$error = "";
$zipname = 'selected_files.zip';
$zip->open($zipname, ZipArchive::CREATE);
foreach ($selectedFiles as $fileName) {
$filePath = realpath('..').'/QUERY_FILE/'. $fileName;
if (file_exists($filePath)) {
$added = $zip->addFile($filePath, $fileName);
if (!$added) {
$error .= "* Failed to add file to ZIP: $fileName\n";
}
} else {
$error .= "* File not found: $fileName\n";
}
}
$zip->close();
if (file_exists($zipname)) {
// Download the zip file
header('Content-Type: application/zip');
header('Content-disposition: attachment; filename='.$zipname);
header('Content-Length: ' . filesize($zipname));
readfile($zipname);
// Delete the zip file after download
// unlink($zipname);
}
if (!empty($error)) {
echo "Errors occurred while creating the ZIP file:<br>" . $error;
}
} else {
echo 'No files selected';
}