php生成zip压缩文件两个实例详解
在php中生成zip文件我们只要使用一个php zip压缩ZipArchive函数就可以了,下面小编来给大家总结两个实现一个是利用ZipArchive生成zip,另一个压缩文件夹下所有文件.
注意:ZipArchive来压缩文件,这个是php的扩展类,自php5.2版本以后就已经支持这个扩展,如果你在使用的时候出现错误,查看下php.ini里面的extension=php_zip.dll前面的分号有没有去掉,然后再重启Apache这样才能使用这个类库.
例1,生成zip 压缩文件,代码如下:
<?php /* 生成zip 压缩文件 */ function create_zip($files = array() , $destination = '', $overwrite = false) { //if the zip file already exists and overwrite is false, return false if (file_exists($destination) && !$overwrite) { return false; } //vars $valid_files = array(); //if files were passed in... if (is_array($files)) { //cycle through each file foreach ($files as $file) { //make sure the file exists if (file_exists($file)) { $valid_files[] = $file; } } } //if we have good files... if (count($valid_files)) { //create the archive $zip = new ZipArchive(); if ($zip->open($destination, $overwrite ? ZIPARCHIVE::OVERWRITE : ZIPARCHIVE::CREATE) !== true) { return false; } //add the files foreach ($valid_files as $file) { $file_info_arr = pathinfo($file); $zip->addFile($file, $file_info_arr['basename']); //去掉层级目录 } //debug //echo 'The zip archive contains ',$zip->numFiles,' files with a status of ',$zip->status; //close the zip -- done! $zip->close(); //check to make sure the file exists return file_exists($destination); } else { return false; } } define('ROOTPATH', dirname(__FILE__)); //网站路径 $files_to_zip = array( ROOTPATH . DIRECTORY_SEPARATOR . 'PHP+jQuery+Cookbook.pdf', //开源代码phprm.com ROOTPATH . DIRECTORY_SEPARATOR . 'TurboListerZeroTemplate.csv' ); //if true, good; if false, zip creation failed $filename = 'my-archive.zip'; $result = create_zip($files_to_zip, $filename); ?>
例2,压缩文件夹下面的所有文夹,代码如下:
<?php /* php zip压缩文件夹下面的所有文件 */ class HZip { /** * 添加文件和子目录的文件到zip文件 * @param string $folder * @param ZipArchive $zipFile * @param int $exclusiveLength Number of text to be exclusived from the file path. */ private static function folderToZip($folder, &$zipFile, $exclusiveLength) { $handle = opendir($folder); while (false !== $f = readdir($handle)) { if ($f != '.' && $f != '..') { $filePath = "$folder/$f"; // Remove prefix from file path before add to zip. $localPath = substr($filePath, $exclusiveLength); if (is_file($filePath)) { $zipFile->addFile($filePath, $localPath); } elseif (is_dir($filePath)) { // 添加子文件夹 $zipFile->addEmptyDir($localPath); self::folderToZip($filePath, $zipFile, $exclusiveLength); } } } closedir($handle); } /** * Zip a folder (include itself). * Usage: * HZip::zipDir('/path/to/sourceDir', '/path/to/out.zip'); * * @param string $sourcePath Path of directory to be zip. * @param string $outZipPath Path of output zip file. */ public static function zipDir($sourcePath, $outZipPath) { $pathInfo = pathInfo($sourcePath); $parentPath = $pathInfo['dirname']; $dirName = $pathInfo['basename']; $sourcePath = $parentPath . '/' . $dirName; //防止传递'folder' 文件夹产生bug $z = new ZipArchive(); $z->open($outZipPath, ZIPARCHIVE::CREATE); //建立zip文件 $z->addEmptyDir($dirName); //建立文件夹 self::folderToZip($sourcePath, $z, strlen("$parentPath/")); $z->close(); } } //使用方法 HZip::zipDir('yourlife', 'yourlife.zip'); ?>
ziparchive 可选参数:
1.ZipArchive::addEmptyDir
添加一个新的文件目录
2.ZipArchive::addFile
将文件添加到指定zip压缩包中。
3.ZipArchive::addFromString
添加的文件同时将内容添加进去
4.ZipArchive::close
关闭ziparchive
5.ZipArchive::extractTo
将压缩包解压
6.ZipArchive::open
打开一个zip压缩包
7.ZipArchive::getStatusString
返回压缩时的状态内容,包括错误信息,压缩信息等等
8.ZipArchive::deleteIndex
删除压缩包中的某一个文件,如:deleteIndex(0)删除第一个文件
9.ZipArchive::deleteName
删除压缩包中的某一个文件名称,同时也将文件删除.
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