How to use PHP ZipArchive to modify file permissions on compressed packages?

How to use PHP ZipArchive to modify the file permissions of compressed packages?

Introduction:
In daily development, we often encounter situations where we need to modify the permissions of files in compressed packages. PHP's ZipArchive class provides a simple method to handle zip compressed files, and you can also modify the permissions of the files inside. This article will introduce how to use the PHP ZipArchive class to modify the file permissions in the compressed package.

1. Install the Zip extension
Before starting, we first need to confirm whether PHP has the Zip extension installed. You can check whether the extension has been installed by running the command php -m | grep zip. If it is not installed, we need to install the Zip extension first, which can be installed through the following command:

sudo apt-get install php-zip

2. Decompress the compressed package
Before modifying the permissions of the files in the compressed package, we first need to unzip the compressed package Unzip it to the specified directory, and then modify the permissions. You can use the following code to decompress the compressed package:

$zip = new ZipArchive;
if ($zip->open('example.zip') === TRUE) {
    $zip->extractTo('path/to/unzip');
    $zip->close();
    echo '解压成功';
} else {
    echo '解压失败';
}

Among them, example.zip is the file name of the compressed package that needs to be decompressed, and path/to/unzip is the decompressed file. The file storage path after.

3. Permission modification
After decompressing the compressed package, we can modify the permissions of the files in it. You can use the chmod() function to modify the permissions of the file, for example:

chmod('path/to/unzip/file.txt', 0755);

where path/to/unzip/file.txt is the file that needs to be modified. Path, 0755 is the permission value.

4. Recompression
After modifying the file permissions, if you need to recompress into a new compressed package, you can use the following code:

$zip = new ZipArchive;
if ($zip->open('new_example.zip', ZipArchive::CREATE) === TRUE) {
    // 添加权限修改后的文件到新的压缩包中
    $zip->addFile('path/to/unzip/file.txt', 'file.txt');
    $zip->close();
    echo '压缩成功';
} else {
    echo '压缩失败';
}

Among them, new_example .zip is the file name of the new compressed package, path/to/unzip/file.txt is the file path after the permissions were just modified.

Summary:
By using PHP's ZipArchive class, we can easily modify the permissions of the files in the compressed package. First, you need to decompress the compressed package to the specified directory, then use the chmod() function to modify the permissions of the file, and finally recompress the modified file into a new compressed package.

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