要使用该PHP扩展类,需要(PHP 5 >= 5.2.0, PECL zip >= 1.1.0),部分方法需要 PHP 5.2.+,且php.ini配置支持zip
对于win系统,直接去掉php_zip.dll 扩展的注释,然后重启http服务(IIS或Apache)即可
Linux还没有试验,理论上差别不会很大
功能:
1、解压缩zip文件
2、将文件压缩成zip文件
3、追加文件到zip文件
4、将文件夹打包成zip文件(需要循环添加文件与创建空文件夹)
5、删除压缩文件中的条目
--------------------- ZipArchive对象常用方法介绍 ---------------------
测试约定:
测试文件为text.zip,该压缩文件包含了三个被压缩的文件(hello.txt、word.txt、ooxx.jpg),如下所示
代码如下:
text.zip
hello.txt
word.txt
ooxx.jpg
打开zip文件,以便进一步操作
ZipArchive::open
(PHP 5 >= 5.2.0, PECL zip >= 1.1.0)
mixed ZipArchive::open ( string $filename [, int $flags ] )
第2个参数讲解
ZIPARCHIVE::OVERWRITE 总是创建一个新的文件,如果指定的zip文件存在,则会覆盖掉
ZIPARCHIVE::CREATE 如果指定的zip文件不存在,则新建一个
ZIPARCHIVE::EXCL 如果指定的zip文件存在,则会报错
ZIPARCHIVE::CHECKCONS
返回值:
如果返回值等于下面的属性,表示对应的错误 或者 返回TRUE
$res == ZipArchive::ER_EXISTS File already exists.(文件已经存在)
$res == ZipArchive::ER_INCONS Zip archive inconsistent.(压缩文件不一致)
$res == ZipArchive::ER_INVAL Invalid argument.(无效的参数)
$res == ZipArchive::ER_MEMORY Malloc failure.(内存错误?这个不确定)
$res == ZipArchive::ER_NOENT No such file.(没有这样的文件)
$res == ZipArchive::ER_NOZIP Not a zip archive.(没有一个压缩文件)
$res == ZipArchive::ER_OPEN Can't open file.(不能打开文件)
$res == ZipArchive::ER_READ Read error.(读取错误)
$res == ZipArchive::ER_SEEK Seek error.(查找错误)
代码如下:
$zip = new ZipArchive;
$res = $zip->open('test.zip');
if ($res === TRUE) {
echo 'ok';
//解压缩到test文件夹
$zip->extractTo('test');
$zip->close();
} else {
echo 'failed, code:' . $res;
}
?>
根据压缩文件内的列表索引,返回被压缩文件的名称
ZipArchive::getNameIndex
string ZipArchive::getNameIndex ( int $index [, int $flags ] )
代码如下:
$zip = new ZipArchive();
$res = $zip->open('test.zip');
if ($res === TRUE) {
var_dump($zip->getNameIndex(0)); // hello.txt
var_dump($zip->getNameIndex(1)); // word.txt
var_dump($zip->getNameIndex(2)); // ooxx.jpg
} else {
echo 'failed, code:' . $res;
}
$zip->close();
?>
根据压缩内的文件名称,获取该文件的文本流
ZipArchive::getStream
resource ZipArchive::getStream ( string $name )
代码如下:
$zip = new ZipArchive();
$res = $zip->open('test.zip');
if ($res === TRUE) {
$stream = $zip->getStream('hello.txt');
} else {
echo 'failed, code:' . $res;
}
$zip->close();
$str = stream_get_contents($stream); //这里注意获取到的文本编码
var_dump($str);
?>
根据压缩文件内的索引(从0开始)修改压缩文件内的文件名
ZipArchive::renameIndex
bool ZipArchive::renameIndex ( int $index , string $newname )
(PHP 5 >= 5.2.0, PECL zip >= 1.5.0)
成功时返回 TRUE, 或者在失败时返回 FALSE。
代码如下:
$zip = new ZipArchive;
$res = $zip->open('test.zip');
if ($res === TRUE) {
//把压缩文件内第一个文件修改成newname.txt
$zip->renameIndex(0,'newname.txt');
$zip->close();
} else {
echo 'failed, code:' . $res;
}
?>
根据压缩文件内的文件名,修改压缩文件内的文件名
ZipArchive::renameName
(PHP 5 >= 5.2.0, PECL zip >= 1.5.0)
代码如下:
$zip = new ZipArchive;
$res = $zip->open('test.zip');
if ($res === TRUE) {
//把压缩文件内的word.txt修改成newword.txt
$zip->renameName('word.txt','newword.txt');
$zip->close();
} else {
echo 'failed, code:' . $res;
}
?>
获取压缩文件的注释(zip的文件注释)
ZipArchive::getArchiveComment
(PHP 5 >= 5.2.0, PECL zip >= 1.1.0)
string ZipArchive::getArchiveComment ([ int $flags ] )
参数:ZipArchive::FL_UNCHANGED
如果参数设置为 ZipArchive::FL_UNCHANGED, 返回原始的还没有改变的注释
例如,在处理该压缩文件时,使用setArchiveComment()方法改变或设置注释时
如果加上ZipArchive::FL_UNCHANGED这个参数,则表示获取改变之前的注释内容,否则获取已经改变的注释内容
类似的还有:
ZipArchive::getCommentIndex 根据压缩文件内的文件索引获取【文件注释】
ZipArchive::getCommentName 根据压缩文件内的文件名称获取【文件注释】
注意:这里的是文件注释,不是压缩文件(zip)的注释
设置或修改压缩文件的注释(zip的文件注释)
ZipArchive::setArchiveComment
(PHP 5 >= 5.2.0, PECL zip >= 1.4.0)
bool ZipArchive::setArchiveComment ( string $comment )
代码如下:
$zip = new ZipArchive;
$res = $zip->open('test.zip', ZipArchive::CREATE);
if ($res === TRUE) {
//$zip->addFromString('test.txt', 'file content goes here');
$zip->setArchiveComment('new archive comment');
$zip->close();
echo 'ok';
} else {
echo 'failed';
}
?>
根据压缩文件内的索引删除压缩文件内的文件(也就是删除档案内的条目)
ZipArchive::deleteIndex
(PHP 5 >= 5.2.0, PECL zip >= 1.5.0)
一、如何解压缩一个zip文件 extractTo()
代码如下:
$zip = new ZipArchive();
一、如何创建压缩文件? addFromString() addFile()
即是是把一个或多个文件打包成一个zip文件
1、只需要new一个ZipArchive对象
2、然后使用该对象的open方法创建一个zip文件
3、接着使用addFile方法,将要打包的文件写入刚刚创建的zip文件中
4、最后记得关闭该对象
代码如下:
//建立一个新的ZipArchive的对象
$zip = new ZipArchive;
$res = $zip->open('test.zip');
//如果打开成功
if ($res === TRUE) {
//如果打开失败
} else {
//输出出错的代码
echo 'failed, code:' . $res;
}
$zip->close();
以上所述就是本文的全部内容了,希望能对大家有所帮助。

PHP is a server-side scripting language used for dynamic web development and server-side applications. 1.PHP is an interpreted language that does not require compilation and is suitable for rapid development. 2. PHP code is embedded in HTML, making it easy to develop web pages. 3. PHP processes server-side logic, generates HTML output, and supports user interaction and data processing. 4. PHP can interact with the database, process form submission, and execute server-side tasks.

PHP has shaped the network over the past few decades and will continue to play an important role in web development. 1) PHP originated in 1994 and has become the first choice for developers due to its ease of use and seamless integration with MySQL. 2) Its core functions include generating dynamic content and integrating with the database, allowing the website to be updated in real time and displayed in personalized manner. 3) The wide application and ecosystem of PHP have driven its long-term impact, but it also faces version updates and security challenges. 4) Performance improvements in recent years, such as the release of PHP7, enable it to compete with modern languages. 5) In the future, PHP needs to deal with new challenges such as containerization and microservices, but its flexibility and active community make it adaptable.

The core benefits of PHP include ease of learning, strong web development support, rich libraries and frameworks, high performance and scalability, cross-platform compatibility, and cost-effectiveness. 1) Easy to learn and use, suitable for beginners; 2) Good integration with web servers and supports multiple databases; 3) Have powerful frameworks such as Laravel; 4) High performance can be achieved through optimization; 5) Support multiple operating systems; 6) Open source to reduce development costs.

PHP is not dead. 1) The PHP community actively solves performance and security issues, and PHP7.x improves performance. 2) PHP is suitable for modern web development and is widely used in large websites. 3) PHP is easy to learn and the server performs well, but the type system is not as strict as static languages. 4) PHP is still important in the fields of content management and e-commerce, and the ecosystem continues to evolve. 5) Optimize performance through OPcache and APC, and use OOP and design patterns to improve code quality.

PHP and Python have their own advantages and disadvantages, and the choice depends on the project requirements. 1) PHP is suitable for web development, easy to learn, rich community resources, but the syntax is not modern enough, and performance and security need to be paid attention to. 2) Python is suitable for data science and machine learning, with concise syntax and easy to learn, but there are bottlenecks in execution speed and memory management.

PHP is used to build dynamic websites, and its core functions include: 1. Generate dynamic content and generate web pages in real time by connecting with the database; 2. Process user interaction and form submissions, verify inputs and respond to operations; 3. Manage sessions and user authentication to provide a personalized experience; 4. Optimize performance and follow best practices to improve website efficiency and security.

PHP uses MySQLi and PDO extensions to interact in database operations and server-side logic processing, and processes server-side logic through functions such as session management. 1) Use MySQLi or PDO to connect to the database and execute SQL queries. 2) Handle HTTP requests and user status through session management and other functions. 3) Use transactions to ensure the atomicity of database operations. 4) Prevent SQL injection, use exception handling and closing connections for debugging. 5) Optimize performance through indexing and cache, write highly readable code and perform error handling.

Using preprocessing statements and PDO in PHP can effectively prevent SQL injection attacks. 1) Use PDO to connect to the database and set the error mode. 2) Create preprocessing statements through the prepare method and pass data using placeholders and execute methods. 3) Process query results and ensure the security and performance of the code.


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