Recommend a PHP compression and decompression class PclZip_PHP tutorial

PclZip is a very powerful PHP class for compressing and decompressing zip files. The PclZip library can compress and decompress Zip format compressed files (WinZip, PKZIP); and can process such files. Including generating compressed files, listing the contents of compressed files, decompressing files, etc. At the same time, you can also add or delete files to existing ZIP packages.

Official website: http://www.phpconcept.net/pclzip/

Recently I am developing my WordPress plug-in ShareLink. In the process, I discovered PclZip, a PHP class for operating zip files. I have to recommend it. Simple, easy to use, and powerful are my evaluations of it.

Another reason for recommendation is that I discovered a lewd usage of PHP function parameters in its source code. An example will be given below.

Generate zip file

Usage 1:

<?php
	include_once('pclzip.lib.php');
	$archive = new PclZip('archive.zip');
	$v_list = $archive->create('file.txt,data/text.txt,folder');
	if ($v_list == 0) {
		die("Error : ".$archive->errorInfo(true));
	}
?>

Usage 2:

<?php
	include_once('pclzip.lib.php');
	$archive = new PclZip('archive.zip');
	$v_list = $archive->create('data/file.txt,data/text.txt',
							PCLZIP_OPT_REMOVE_PATH, 'data',
                            PCLZIP_OPT_ADD_PATH, 'install');
	if ($v_list == 0) {
		die("Error : ".$archive->errorInfo(true));
	}
?>

See that there are no parameters in the create method, and then look at the method prototype and you will know how slutty it is. At least I haven't used it that way.

The following is a simple code for compressing the entire site and backing it up:

<?php 
require_once('pclzip.lib.php');
$zip = new PclZip("archive.zip"); 
$v_list = $zip->create($_SERVER['DOCUMENT_ROOT'] ,PCLZIP_OPT_REMOVE_PATH,$_SERVER['DOCUMENT_ROOT']); 
if($v_list == 0){ echo '异常：'.$z->errorInfo(true); } 
else { echo '备份成功'; }
?>

Other ways to use:

<?php
//解压缩到extract/folder/这个目录中       
$list = $archive->extract(PCLZIP_OPT_PATH, "extract/folder/");       
        
//增加这个目录在压缩档中，完成以后压缩档里面会有backup这个目录，backup里面会有这两个档案       
$list = $archive->create("file.txt,image.gif",PCLZIP_OPT_ADD_PATH, "backup");       
        
//去掉部份的路径，这里完成后会变成test/file.txt       
$list = $archive->add("/usr/local/user/test/file.txt",PCLZIP_OPT_REMOVE_PATH, "/usr/local/user");       
        
//把所有路径都去掉，这个压缩档建立完后，里面就只会有file.txt跟image.gif，不会有目录了       
$list = $archive->create("data/file.txt images/image.gif",PCLZIP_OPT_REMOVE_ALL_PATH);       
        
//把解压缩出来的档案的CHMOD设成0777       
$list = $archive->extract(PCLZIP_OPT_SET_CHMOD, 0777);       
    
//解压缩部份的档案，这个参数是使用档案名称判别       
//引数可以用下面这样的阵列       
$rule_list[0] = 'test/aaa.txt';       
$rule_list[1] = 'test/ddd.txt';       
//或是下面这样，一个字串中，用逗号分隔每个要解压缩的档案       
$rule_list = "test/aaa.txt,test/ddd.txt";       
$list = $archive->extract(PCLZIP_OPT_BY_NAME,$rule_list);       
        
//解压缩部份的档案，使用php的ereg()函式，档案名称有比对成功的都会被解压缩       
$list = $archive->extract(PCLZIP_OPT_BY_EREG, "aa");       
        
//解压缩部份的档案，使用php的preg_match()函式，档案名称有比对成功的都会被解压缩       
$list = $archive->extract(PCLZIP_OPT_BY_PREG, "/^bb/");       
//上面这两个函式如果不懂的话，请先研究正规表示法(Regular Expression)       
        
//依照阵列中元素的索引解压缩，可是我不太懂index啥 = =a       
$list = $archive->extract(PCLZIP_OPT_BY_INDEX, array('0-1','6-7'));       
        
//将一个档案内容解压缩成一个字串       
$list = $archive->extract(PCLZIP_OPT_BY_NAME, "data/readme.txt",PCLZIP_OPT_EXTRACT_AS_STRING);       
        
//将一个档案内容解压缩完后直接输出(echo)       
$list = $archive->extract(PCLZIP_OPT_BY_NAME, "data/readme.txt",PCLZIP_OPT_EXTRACT_IN_OUTPUT);       
        
//将一个档案加入一个压缩档中，但不会对此档案压缩       
$list = $archive->add("data/file.txt", PCLZIP_OPT_NO_COMPRESSION);       
        
//对此压缩档增加一个注解，如果原本就有注解的话会被覆盖掉       
$list = $archive->create("data", PCLZIP_OPT_COMMENT, "Add a comment");       
        
//对此压缩档增加一个注解，如果原本就有注解的话会接在后面       
$list = $archive->add("data", PCLZIP_OPT_ADD_COMMENT, "Add a comment after the existing one");       
        
//对此压缩档增加一个注解，如果原本就有注解的话会放在原本的注解前面       
$list = $archive->add("data", PCLZIP_OPT_PREPEND_COMMENT, "Add a comment before the existing one");      
?>

Class library download: pclzip-2-8-2.zip

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