<?php
//根据需求配置内存和执行时间
set_time_limit(360000);
ini_set('memory_limit','20000M');
ob_clean();//洗干净开始干活
header("Content-Disposition: attachment; filename=".date('Y-m-d_hisa').".zip");//设置下载压缩包名称
require ('zip.class.php');//引用类这个类是phpmyadmin/libraries/zip.lib.php 这个的文件 引用记得删除头部的判断
//创建生成器
$zip = new ZipFile();
//开启流式压缩
$zip->setDoWrite();
$data1;
define('BASE_PATH',str_replace('\\','/',realpath(dirname(__FILE__).'/'))."/");//去当前执行文件绝对路径
//define('WWWROOT',$_SERVER['DOCUMENT_ROOT']."/");//网站根目录,如果需要用这个直接屏蔽上面一行代码用这个变量 把下面BASE_PATH替换成WWWROOT即可
$lj=BASE_PATH."bbb";//设置需要打包的目录,方便下面替换避免压缩包把整个路径的文件夹创建
$filearr1 = list_file($lj);//所有待压缩的文件数组，一般只存路径即可
$filearr=toOneArray($filearr1);//多维数组改为一维数组
foreach ($filearr as $key => $value) {
try{
//此处可以添加用户连接判断，若是用户取消了下载或断开了链接就终止操作
$url = $value;
$file= file_get_contents($url);//获取文件内容，用file_get_content即可，这个是我自己封装的
$value=str_replace($lj."/", "", $value);//替换路径避免压缩包多余路径文件夹
$zip->addFile($file,iconv("utf-8","gbk",$value));//调用类的addFile开始压缩
ob_flush();//输出本次压缩的文件
}catch(Exception $e){
log($e);
}
}
//输出zip文件尾部
$zip->file();
flush();//结束上传，缺少可能会引起压缩文件打不开
function list_file($date){
//1、首先先读取文件夹
$temp=scandir($date);
//遍历文件夹
foreach($temp as $v){
$a=$date.'/'.$v;
if($v=='.' || $v=='..'){//判断是否为系统隐藏的文件.和.. 如果是则跳过否则就继续往下走，防止无限循环再这里。
continue;
}
if(is_dir($a)){//如果是文件夹则执行
$data1[] = list_file($a);//因为是文件夹所以再次调用自己这个函数，把这个文件夹下的文件遍历出来
}else{
$data1[]=["imgpath"=>$a]; //加入到数组里准备返回(特别上面那个他是调用自身那么他也会返回多维数组出来)
}
}
return $data1;
}
function toOneArray($array)
{
static $res_arr = [];
foreach ($array as $v) {
if (is_array($v)) {
toOneArray($v);
} else {
$res_arr[] = $v;
}
}
return $res_arr;
}
?><?php
/* vim: set expandtab sw=4 ts=4 sts=4: */
/**
* Zip file creation
*
* @package PhpMyAdmin
*/
/**
* Zip file creation class.
* Makes zip files.
*
* @access public
* @package PhpMyAdmin
* @see Official ZIP file format: http://www.pkware.com/support/zip-app-note
*/
class ZipFile
{
/**
* Whether to echo zip as it's built or return as string from -> file
*
* @var boolean $doWrite
*/
var $doWrite = false;
/**
* Array to store compressed data
*
* @var array $datasec
*/
var $datasec = array();
/**
* Central directory
*
* @var array $ctrl_dir
*/
var $ctrl_dir = array();
/**
* End of central directory record
*
* @var string $eof_ctrl_dir
*/
var $eof_ctrl_dir = "\x50\x4b\x05\x06\x00\x00\x00\x00";
/**
* Last offset position
*
* @var integer $old_offset
*/
var $old_offset = 0;
/**
* Sets member variable this -> doWrite to true
* - Should be called immediately after class instantiantion
* - If set to true, then ZIP archive are echo'ed to STDOUT as each
* file is added via this -> addfile(), and central directories are
* echoed to STDOUT on final call to this -> file(). Also,
* this -> file() returns an empty string so it is safe to issue a
* "echo $zipfile;" command
*
* @access public
*
* @return void
*/
function setDoWrite()
{
$this -> doWrite = true;
} // end of the 'setDoWrite()' method
/**
* Converts an Unix timestamp to a four byte DOS date and time format (date
* in high two bytes, time in low two bytes allowing magnitude comparison).
*
* @param integer $unixtime the current Unix timestamp
*
* @return integer the current date in a four byte DOS format
*
* @access private
*/
function unix2DosTime($unixtime = 0)
{
$timearray = ($unixtime == 0) ? getdate() : getdate($unixtime);
if ($timearray['year'] < 1980) {
$timearray['year'] = 1980;
$timearray['mon'] = 1;
$timearray['mday'] = 1;
$timearray['hours'] = 0;
$timearray['minutes'] = 0;
$timearray['seconds'] = 0;
} // end if
return (($timearray['year'] - 1980) << 25)
| ($timearray['mon'] << 21)
| ($timearray['mday'] << 16)
| ($timearray['hours'] << 11)
| ($timearray['minutes'] << 5)
| ($timearray['seconds'] >> 1);
} // end of the 'unix2DosTime()' method
/**
* Adds "file" to archive
*
* @param string $data file contents
* @param string $name name of the file in the archive (may contains the path)
* @param integer $time the current timestamp
*
* @access public
*
* @return void
*/
function addFile($data, $name, $time = 0)
{
$name = str_replace('\\', '/', $name);
$dtime = substr("00000000" . dechex($this->unix2DosTime($time)), -8);
$hexdtime = '\x' . $dtime[6] . $dtime[7]
. '\x' . $dtime[4] . $dtime[5]
. '\x' . $dtime[2] . $dtime[3]
. '\x' . $dtime[0] . $dtime[1];
eval('$hexdtime = "' . $hexdtime . '";');
$fr = "\x50\x4b\x03\x04";
$fr .= "\x14\x00"; // ver needed to extract
$fr .= "\x00\x00"; // gen purpose bit flag
$fr .= "\x08\x00"; // compression method
$fr .= $hexdtime; // last mod time and date
// "local file header" segment
$unc_len = strlen($data);
$crc = crc32($data);
$zdata = gzcompress($data);
$zdata = substr(substr($zdata, 0, strlen($zdata) - 4), 2); // fix crc bug
$c_len = strlen($zdata);
$fr .= pack('V', $crc); // crc32
$fr .= pack('V', $c_len); // compressed filesize
$fr .= pack('V', $unc_len); // uncompressed filesize
$fr .= pack('v', strlen($name)); // length of filename
$fr .= pack('v', 0); // extra field length
$fr .= $name;
// "file data" segment
$fr .= $zdata;
// echo this entry on the fly, ...
if ( $this -> doWrite) {
echo $fr;
} else { // ... OR add this entry to array
$this -> datasec[] = $fr;
}
// now add to central directory record
$cdrec = "\x50\x4b\x01\x02";
$cdrec .= "\x00\x00"; // version made by
$cdrec .= "\x14\x00"; // version needed to extract
$cdrec .= "\x00\x00"; // gen purpose bit flag
$cdrec .= "\x08\x00"; // compression method
$cdrec .= $hexdtime; // last mod time & date
$cdrec .= pack('V', $crc); // crc32
$cdrec .= pack('V', $c_len); // compressed filesize
$cdrec .= pack('V', $unc_len); // uncompressed filesize
$cdrec .= pack('v', strlen($name)); // length of filename
$cdrec .= pack('v', 0); // extra field length
$cdrec .= pack('v', 0); // file comment length
$cdrec .= pack('v', 0); // disk number start
$cdrec .= pack('v', 0); // internal file attributes
$cdrec .= pack('V', 32); // external file attributes
// - 'archive' bit set
$cdrec .= pack('V', $this -> old_offset); // relative offset of local header
$this -> old_offset += strlen($fr);
$cdrec .= $name;
// optional extra field, file comment goes here
// save to central directory
$this -> ctrl_dir[] = $cdrec;
} // end of the 'addFile()' method
/**
* Echo central dir if ->doWrite==true, else build string to return
*
* @return string if ->doWrite {empty string} else the ZIP file contents
*
* @access public
*/
function file()
{
$ctrldir = implode('', $this -> ctrl_dir);
$header = $ctrldir .
$this -> eof_ctrl_dir .
pack('v', sizeof($this -> ctrl_dir)) . //total #of entries "on this disk"
pack('v', sizeof($this -> ctrl_dir)) . //total #of entries overall
pack('V', strlen($ctrldir)) . //size of central dir
pack('V', $this -> old_offset) . //offset to start of central dir
"\x00\x00"; //.zip file comment length
if ( $this -> doWrite ) { // Send central directory & end ctrl dir to STDOUT
echo $header;
return ""; // Return empty string
} else { // Return entire ZIP archive as string
$data = implode('', $this -> datasec);
return $data . $header;
}
} // end of the 'file()' method
} // end of the 'ZipFile' class
?>
<?php
/* creates a compressed zip file */
function create_zip($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) {
$zip->addFile($file,$file);
}
//debug
//echo 'The zip archive contains ',$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;
}
}
/***** Example Usage ***/
$files = array('file1.jpg', 'file2.jpg', 'file3.gif');
create_zip($files, 'myzipfile.zip', true);
?>[scode type="green"]PHP解压缩 Zip文件[/scode]
<?php
/**
* @param $file - path to zip file
* @parm $destination - destination directory for unzipped files
*/
function unzip_file($file, $destination) {
// create object
$zip = new ZipArchive() ;
// open archive
if ($zip->open($file) !== TRUE) {
die ('Could not open archive');
}
// extract contents to destination directory
$zip->extractTo($destination);
// close archive
$zip->close();
echo 'Archive extracted to directory';
}
?>guestfish --rw -a qcow2
#镜像文件绝对路径 （例子：guestfish --rw -a /home/kvm/images/CentOS-7.8.2003-x64.qcow2）
进入后先执行run；
随后执行list-filesystems 查看分区信息；
以魔方centos7.8镜像为例，分区信息为 /dev/sda1: ext4 ，执行mount /dev/sda1 / 进行分区挂载；
接下来可以修改任意文件，例如操作ssh登录提示 vi /etc/motd
执行exit 退出
目前发现一个重点问题：在挂载xfs分区时会出现分区格式不兼容的情况。例如CentOS8官方的云镜像，默认是xfs分区格式，CentOS8与CentOS7的xfs格式不相同，会出现兼容问题 运行不成功或挂载不成功，请注意区分。1.另外一种挂载到宿主机目录方式
guestmount -a qcow2 -m 分区 /宿主机目录
#镜像文件绝对路径 （例子：guestmount -a /home/kvm/images/CentOS-7.8.2003-x64.qcow2 -m /dev/sda1 /mnt）
#卸载命令
guestunmount /mnt二、 清除磁盘空洞
virt-sparsify -x 原qcow2镜像文件路径 --convert qcow2 新qcow2镜像文件路径
（例子：virt-sparsify -x /home/kvm/images/CentOS-7.8.2003-x64.qcow2 --convert qcow2 /home/kvm/images/tmp.qcow2）如果出错提示tmp不足可以参考下面这个文章
[post cid="134" /]
操作完成后，可先进行重装验证是否可以正常引导启动，最后修改新qcow2镜像文件名称
三、对qcow2镜像文件进行打包压缩
qemu-img convert -c -O qcow2 需要压缩的镜像文件路径 压缩后的镜像文件路径
（例子：qemu-img convert -c -O qcow2 /home/kvm/images/tmp.qcow2 /home/kvm/images/CentOS-7.8.2003-x64.qcow2）