PHP ZipArchive Extension In-depth Analysis: Mastering the Art of Archive Processing

PHP ZipArcHive Extension: The Art of Archive Processing

PHP ZipArchive extension is a powerful archive processing tool provided by PHP, which can create, read, add, decompress and other operations on zip format files. This article is written by PHP editor Zimo to provide you with an in-depth analysis of the usage methods and techniques of ZipArchive extension to help you master the art of file processing and improve development efficiency. Welcome to read!

Create and modify ZIP archives

To create a new ZIP archive, you need to create a ZipArchive object and call the open() method. The following example creates an empty file named "test.zip":

$zip = new ZipArchive();
$zip->open("test.zip", ZipArchive::CREATE);

To add a file to a ZIP archive, you can use the addFile() method. The following example adds the "file.txt" file to the "test.zip" archive:

$zip->addFile("file.txt", "file.txt");

You can also use the addFromString() method to add a string directly to the archive. The following example creates a ZIP archive containing a content named "content.txt":

$zip->addFromString("content.txt", "This is the content");

To modify an existing ZIP archive, you need to open the archive in read-only mode and then add files using the addFile() or addFromString() method.

Unzip ZIP archive

To decompress a ZIP archive, you need to create a ZipArchive object and call the open() method, specifying the ZipArchive::RDONLY flag. The following example unzips the "test.zip" file to the "extract" directory:

$zip = new ZipArchive();
$zip->open("test.zip", ZipArchive::RDONLY);
$zip->extractTo("extract");

You can also use the extractTo() method to specify a specific file or directory for decompression.

Traverse and manage ZIP archive entries

The ZipArchive extension provides multiple methods to traverse and manage entries in ZIP archives. You can call the numFiles() method to get the number of files in the file, use the getNameIndex() method to get the file index by name, and use statIndex()Method to get file metadata.

$numFiles = $zip->numFiles();
$fileName = $zip->getNameIndex(0);
$fileStat = $zip->statIndex(0);

Delete and replace ZIP archive entries

To delete files from a ZIP archive, you can use the deleteIndex() method. To replace a file, you need to delete the old file first and then add the new one.

$zip->deleteIndex(0);
$zip->addFile("file.txt", "file.txt");

Advanced Features

The ZipArchive extension also provides many advanced features such as password protection, encryption and annotation management. You can use the setPass<strong class="keylink">Word</strong>() method to set the password, the setEncrypt<strong class="keylink">io</strong>nName() method to set the encryption algorithm, And the setCommentName() method sets the comment.

$zip->setPassword("password");
$zip->setEncryptionName("aes-256");
$zip->setCommentName("This is a comment");

in conclusion

PHP ZipArchive extension is a powerful and easy-to-use tool for working with ZIP archives. By mastering its functionality and usage, developers can efficiently create, modify and decompress ZIP archives, simplifying data exchange and archive management tasks.

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