php ZipArchive can be said to be a function that comes with PHP. It can compress and decompress files. However, before using this class, we must change the semicolon in front of extension=php_zip.dll in php.ini. Have you removed it and then restarted Apache so that you can use this class library?
ziparchive optional parameter
1.ZipArchive::addEmptyDir
Add a new file directory
2.ZipArchive::addFile
Add files to the specified zip archive.
3.ZipArchive::addFromString
The content of the added files will be added at the same time
4.ZipArchive::close
Close ziparchive
5.ZipArchive::extractTo
Extract the compressed package
6.ZipArchive::open
Open a zip archive
7.ZipArchive::getStatusString
Returns the status content during compression, including error information, compression information, etc.
8.ZipArchive::deleteIndex
Delete a certain file in the compressed package, such as: deleteIndex(0) deletes the first file
9.ZipArchive::deleteName
Delete a certain file name in the compressed package and also delete the file.
......
*/
Example
1. Unzip the zip file
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$zip = new ZipArchive;//Create a new one ZipArchive object
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$zip = new ZipArchive;//新建一个ZipArchive的对象
/*
通过ZipArchive的对象处理zip文件
$zip->open这个方法的参数表示处理的zip文件名。
如果对zip文件对象操作成功，$zip->open这个方法会返回TRUE
*/
if ($zip->open('test.zip') === TRUE)
{
$zip->extractTo('images');//假设解压缩到在当前路径下images文件夹的子文件夹php
$zip->close();//关闭处理的zip文件
}
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/*
Processing zip files through ZipArchive objects
The parameter of the $zip->open method indicates the name of the zip file to be processed.
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$zip = new ZipArchive;
/*
$zip->open这个方法第一个参数表示处理的zip文件名。
第二个参数表示处理模式，ZipArchive::OVERWRITE表示如果zip文件存在，就覆盖掉原来的zip文件。
如果参数使用ZIPARCHIVE::CREATE，系统就会往原来的zip文件里添加内容。
如果不是为了多次添加内容到zip文件，建议使用ZipArchive::OVERWRITE。
使用这两个参数，如果zip文件不存在，系统都会自动新建。
如果对zip文件对象操作成功，$zip->open这个方法会返回TRUE
*/
if ($zip->open('test.zip', ZipArchive::OVERWRITE) === TRUE)
{
$zip->addFile('image.txt');//假设加入的文件名是image.txt，在当前路径下
$zip->close();
}
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If the operation on the zip file object is successful, the $zip->open method will return TRUE
*/
if ($zip->open('test.zip') === TRUE)
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$zip = new ZipArchive;
$res = $zip->open('test.zip', ZipArchive::CREATE);
if ($res === TRUE) {
$zip->addFromString('test.txt', 'file content goes here');
$zip->close();
echo 'ok';
} else {
echo 'failed';
}
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{
$zip->extractTo('images');//Assume to extract to a subfolder of the images folder under the current path php
$zip->close();//Close the processed zip file
}
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2. Compress the file into a zip file
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| $zip = new ZipArchive;
/*
The first parameter of the $zip->open method indicates the name of the zip file to be processed.
The second parameter indicates the processing mode. ZipArchive::OVERWRITE indicates that if the zip file exists, the original zip file will be overwritten.
If the parameter uses ZIPARCHIVE::CREATE, the system will add content to the original zip file.
If you are not adding content to the zip file multiple times, it is recommended to use ZipArchive::OVERWRITE.
Using these two parameters, if the zip file does not exist, the system will automatically create it.
If the operation on the zip file object is successful, the $zip->open method will return TRUE
*/
if ($zip->open('test.zip', ZipArchive::OVERWRITE) === TRUE)
{
$zip->addFile('image.txt');//Assume that the added file name is image.txt, in the current path
$zip->close();
}
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3. Add file append content to zip file
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| $zip = new ZipArchive;
$res = $zip->open('test.zip', ZipArchive::CREATE);
if ($res === TRUE) {
$zip->addFromString('test.txt', 'file content goes here');
$zip->close();
echo 'ok';
} else {
echo 'failed';
}
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4. Pack the folder into a zip file
The code is as follows
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function addFileToZip($path, $zip) {
$handler = opendir($path); //打开当前文件夹由$path指定。
/*
循环的读取文件夹下的所有文件和文件夹
其中$filename = readdir($handler)是每次循环的时候将读取的文件名赋值给$filename，
为了不陷于死循环，所以还要让$filename !== false。
一定要用!==，因为如果某个文件名如果叫'0'，或者某些被系统认为是代表false，用!=就会停止循环
*/
while (($filename = readdir($handler)) !== false) {
if ($filename != "." && $filename != "..") {//文件夹文件名字为'.'和‘..’，不要对他们进行操作
if (is_dir($path . "/" . $filename)) {// 如果读取的某个对象是文件夹，则递归
addFileToZip($path . "/" . $filename, $zip);
} else { //将文件加入zip对象
$zip->addFile($path . "/" . $filename);
}
}
}
@closedir($path);
}
$zip = new ZipArchive();
if ($zip->open('images.zip', ZipArchive::OVERWRITE) === TRUE) {
addFileToZip('images/', $zip); //调用方法，对要打包的根目录进行操作，并将ZipArchive的对象传递给方法
$zip->close(); //关闭处理的zip文件
}
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function addFileToZip($path, $zip) {
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$zip = new ZipArchive;
if ($zip->open('test.zip') === TRUE) {
$index=$zip->locateName('example.php', ZIPARCHIVE::FL_NOCASE|ZIPARCHIVE::FL_NODIR);
$contents = $zip->getFromIndex($index);
}
?>
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$handler = opendir($path); //Open the current folder specified by $path.
/*
Loop through all files and folders in the folder
Among them, $filename = readdir($handler) assigns the read file name to $filename each time it loops,
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$zip = new ZipArchive;
if ($zip->open('test.zip') === TRUE) {
for($i = 0; $i < $zip->numFiles; $i++)
{
if(substr_count($zip->getNameIndex($i), 'example.php')>0){
$contents = $zip->getFromIndex($i);
}
}
}
?>
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In order not to get stuck in an infinite loop, we have to make $filename !== false. |
Be sure to use !==, because if a file name is called '0', or something is considered by the system to represent false, using != will stop the loop
*/
while (($filename = readdir($handler)) !== false) {
if ($filename != "." && $filename != "..") {//The folder file names are '.' and '..', do not operate on them
if (is_dir($path . "/" . $filename)) {// If an object read is a folder, recurse
addFileToZip($path . "/" . $filename, $zip);
} else { //Add the file to the zip object
$zip->addFile($path . "/" . $filename);
}
}
}
@closedir($path);
}
$zip = new ZipArchive();
if ($zip->open('images.zip', ZipArchive::OVERWRITE) === TRUE) {
addFileToZip('images/', $zip); //Call the method, operate on the root directory to be packaged, and pass the ZipArchive object to the method
$zip->close(); //Close the processed zip file
}
If you only know the file name but not the specific path of the file, you can search the index for the specified file name and then rely on the index to obtain the content.
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$zip = new ZipArchive;<🎜>
if ($zip->open('test.zip') === TRUE) {
$index=$zip->locateName('example.php', ZIPARCHIVE::FL_NOCASE|ZIPARCHIVE::FL_NODIR);
$contents = $zip->getFromIndex($index);
}
?>
The index obtained above relies on the locateName method. If there are files with the same name in multiple paths in the compressed package, it seems that only the index of the first one can be returned. If you want to get the index of all files with the same name, you can only use a stupid method and search in a loop.
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$zip = new ZipArchive;<🎜>
if ($zip->open('test.zip') === TRUE) {
for($i = 0; $i < $zip->numFiles; $i++)
{
If(substr_count($zip->getNameIndex($i), 'example.php')>0){
$contents = $zip->getFromIndex($i);
}
}
}
?>
http://www.bkjia.com/PHPjc/632774.htmlwww.bkjia.comtruehttp: //www.bkjia.com/PHPjc/632774.htmlTechArticlephp ZipArchive can be said to be a function that comes with PHP. It can compress and decompress files. , but before using this class we must put extension=php_zip.dll in php.ini...
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