如何在php中解压缩zip文件[重复]
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【中文标题】如何在php中解压缩zip文件[重复]【英文标题】:how to unzip zip files in php [duplicate] 【发布时间】:2011-12-09 07:35:20 【问题描述】:我的图库脚本为我提供了通过 zip 文件上传一堆图像的选项。 当我尝试这样做时,我收到错误行: 致命错误:调用未定义函数:zip_open() in ..
这是 phpinfo 的摘录:
ZLib 支持:启用 编译版本:1.1.4 链接版本:1.1.4
zlib.output_compression:关闭 zlib.output_compression_level:-1 zlib.output_handler: 没有值
Zlib 已启用 .. 那么为什么我会收到该错误消息? 谢谢你帮助我。
【问题讨论】:
如果您提供了导致您出现问题的原始示例代码,这个问题(虽然是很久以前提出的)可能是一个有效的问题。 【参考方案1】:提取 zip 文件的非常简单的代码。
$zip = new ZipArchive;
$zip->open('myfile.zip');
$zip->extractTo('./');
$zip->close();
【讨论】:
【参考方案2】:默认情况下未启用 PHP 中的 Zip 支持。编译 php 时需要使用 ZZIPlib 库和 --with-zip=[DIR] 选项。
http://www.php.net/manual/en/ref.zip.php
如果您无法安装 ZZIPLib,您可以使用 zip 类替代方案。只是一个例子(不是我写的):
<?php
class zipfile
/*
zipfile class, for reading or writing .zip files
See http://www.gamingg.net for more of my work
Based on tutorial given by John Coggeshall at http://www.zend.com/zend/spotlight/creating-zip-files3.php
Copyright (C) Joshua Townsend and licensed under the GPL
Version 1.0
*/
var $datasec = array(); // array to store compressed data
var $files = array(); // array of uncompressed files
var $dirs = array(); // array of directories that have been created already
var $ctrl_dir = array(); // central directory
var $eof_ctrl_dir = "\x50\x4b\x05\x06\x00\x00\x00\x00"; //end of Central directory record
var $old_offset = 0;
var $basedir = ".";
function read_zip($name)
// Clear current file
$this->datasec = array();
// File information
$this->name = $name;
$this->mtime = filemtime($name);
$this->size = filesize($name);
// Read file
$fh = fopen($name, "rb");
$filedata = fread($fh, $this->size);
fclose($fh);
// Break into sections
$filesecta = explode("\x50\x4b\x05\x06", $filedata);
// ZIP Comment
$unpackeda = unpack('x16/v1length', $filesecta[1]);
$this->comment = substr($filesecta[1], 18, $unpackeda['length']);
$this->comment = str_replace(array("\r\n", "\r"), "\n", $this->comment); // CR + LF and CR -> LF
// Cut entries from the central directory
$filesecta = explode("\x50\x4b\x01\x02", $filedata);
$filesecta = explode("\x50\x4b\x03\x04", $filesecta[0]);
array_shift($filesecta); // Removes empty entry/signature
foreach($filesecta as $filedata)
// CRC:crc, FD:file date, FT: file time, CM: compression method, GPF: general purpose flag, VN: version needed, CS: compressed size, UCS: uncompressed size, FNL: filename length
$entrya = array();
$entrya['error'] = "";
$unpackeda = unpack("v1version/v1general_purpose/v1compress_method/v1file_time/v1file_date/V1crc/V1size_compressed/V1size_uncompressed/v1filename_length", $filedata);
// Check for encryption
$isencrypted = (($unpackeda['general_purpose'] & 0x0001) ? true : false);
// Check for value block after compressed data
if($unpackeda['general_purpose'] & 0x0008)
$unpackeda2 = unpack("V1crc/V1size_compressed/V1size_uncompressed", substr($filedata, -12));
$unpackeda['crc'] = $unpackeda2['crc'];
$unpackeda['size_compressed'] = $unpackeda2['size_uncompressed'];
$unpackeda['size_uncompressed'] = $unpackeda2['size_uncompressed'];
unset($unpackeda2);
$entrya['name'] = substr($filedata, 26, $unpackeda['filename_length']);
if(substr($entrya['name'], -1) == "/") // skip directories
continue;
$entrya['dir'] = dirname($entrya['name']);
$entrya['dir'] = ($entrya['dir'] == "." ? "" : $entrya['dir']);
$entrya['name'] = basename($entrya['name']);
$filedata = substr($filedata, 26 + $unpackeda['filename_length']);
if(strlen($filedata) != $unpackeda['size_compressed'])
$entrya['error'] = "Compressed size is not equal to the value given in header.";
if($isencrypted)
$entrya['error'] = "Encryption is not supported.";
else
switch($unpackeda['compress_method'])
case 0: // Stored
// Not compressed, continue
break;
case 8: // Deflated
$filedata = gzinflate($filedata);
break;
case 12: // BZIP2
if(!extension_loaded("bz2"))
@dl((strtolower(substr(PHP_OS, 0, 3)) == "win") ? "php_bz2.dll" : "bz2.so");
if(extension_loaded("bz2"))
$filedata = bzdecompress($filedata);
else
$entrya['error'] = "Required BZIP2 Extension not available.";
break;
default:
$entrya['error'] = "Compression method ($unpackeda['compress_method']) not supported.";
if(!$entrya['error'])
if($filedata === false)
$entrya['error'] = "Decompression failed.";
elseif(strlen($filedata) != $unpackeda['size_uncompressed'])
$entrya['error'] = "File size is not equal to the value given in header.";
elseif(crc32($filedata) != $unpackeda['crc'])
$entrya['error'] = "CRC32 checksum is not equal to the value given in header.";
$entrya['filemtime'] = mktime(($unpackeda['file_time'] & 0xf800) >> 11,($unpackeda['file_time'] & 0x07e0) >> 5, ($unpackeda['file_time'] & 0x001f) << 1, ($unpackeda['file_date'] & 0x01e0) >> 5, ($unpackeda['file_date'] & 0x001f), (($unpackeda['file_date'] & 0xfe00) >> 9) + 1980);
$entrya['data'] = $filedata;
$this->files[] = $entrya;
return $this->files;
?>
并像这样使用它:
<?php
include 'class.zip.php';
$file = 'file.zip';
$zip = new zipfile();
$content = array();
foreach ($zip->read_zip($file) AS $filedata)
$content[] = end(explode('.', $filedata['name']));
echo implode(', ', $content);
?>
【讨论】:
【参考方案3】:我使用此代码提取 zip 存档的文件。
$zip = new ZipArchive;
if($zip->open($zipname))
for($i=0; $i<$zip->numFiles; $i++)
echo 'Filename: '.$zip->getNameIndex($i).'<br />';
if($zip->extractTo(dirname(__FILE__).'/extracted/')) echo '<p>FILE EXTRACTED</p>'; else echo '<p>ERROR IN FILE ECTRACTING!</p>';
$zip->close();
else
echo 'Error reading zip-archive!';
【讨论】:
感谢回复 $zipname 表示 zip 文件路径? 是的,例如 $zipname="test.zip"; 我输入此代码时出现错误致命错误:在中找不到类“ZipArchive” 这是我的代码 $filename="myappdemo.com/VueGuides/services/iclean_new.zip" $zip = new ZipArchive; if ($zip->open($filename) === true) echo "生成文本文件。"; for($i = 0; $i numFiles; $i++) $entry = $zip->getNameIndex($i); 回声 $entry; 查看@mat 的答案。他讲述了一些关于在 PHP 中启用 Zip 支持的内容。你是在本地主机上工作还是在虚拟主机上工作?以上是关于如何在php中解压缩zip文件[重复]的主要内容,如果未能解决你的问题,请参考以下文章
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