Case Study of PHP ZipArchive Extension: Sharing Practical Application

The article "Case Study of PHP ZipArchive Extension: Sharing Practical Applications" carefully written by php editor Baicao will lead readers to deeply explore the application of ZipArchive extension in actual projects. Through in-depth case analysis, readers will understand how to use the ZipArchive extension to efficiently process compressed files and provide strong support for project development. This article aims to provide developers with practical guidance to help them better apply ZipArchive extensions and improve project development efficiency and quality.

1. Basic compression

The simplest compression task is to create a new ZIP archive and add files to it. Using the ZipArchive class we can easily do this:

$zip = new ZipArchive();
$zip->open("my_archive.zip", ZipArchive::CREATE);
$zip->addFile("file1.txt");
$zip->addFile("file2.jpg");
$zip->close();

2. Specify compression options

We can customize the compression process by specifying options, such as compression level and password:

$zip = new ZipArchive();
$zip->open("my_archive.zip", ZipArchive::CREATE);
$zip->addFile("file1.txt", null, ZIPARCHIVE::CM_DEFLATE, 9);
$zip->addFile("file2.jpg", null, ZIPARCHIVE::CM_DEFLATE, 6);
$zip->setPassWord("my_password");
$zip->close();

3. Unzip the archive

Decompressing a ZIP archive is equally easy, we can extract individual files or the entire archive:

$zip = new ZipArchive();
$zip->open("my_archive.zip");
$zip->extractTo("destination_directory");
$zip->close();

4. Browse archived content

ZipArchive allows us to browse the contents of the archive, including file name, size and modification time:

$zip = new ZipArchive();
$zip->open("my_archive.zip");
for ($i = 0; $i < $zip->numFiles; $i++) {
$stat = $zip->statIndex($i);
echo $stat["name"] . " (" . $stat["size"] . " bytes)" . PHP_EOL;
}
$zip->close();

5. Modify archive content

We can use ZipArchive to modify archive contents, such as deleting files or changing comments:

$zip = new ZipArchive();
$zip->open("my_archive.zip");
$zip->deleteIndex(0);
$zip->setComment("Updated archive comment");
$zip->close();

6. Streaming ZIP Archives

For large archives, streaming allows us to read and write the archive chunk by chunk, thus saving memory overhead:

$zip = new ZipArchive();
$zip->open("my_archive.zip");
while ($entry = $zip->getStream("file1.txt")) {
// 处理文件内容
fclose($entry);
}
$zip->close();

7. Self-extracting ZIP archive

We can use ZipArchive to create self-extracting ZIP archives, allowing users to decompress the archive without external software:

$zip = new ZipArchive();
$zip->open("my_archive.zip", ZipArchive::CREATE);
$zip->addFile("file1.txt");
$zip->addFile("file2.jpg");
$zip->setComment("//Command=exe -msiexec /i file1.msi //");
$zip->close();

in conclusion:

The

PHP ZipArchive extension is a powerful tool for working with ZIP archives. By understanding its practical applications, we can take full advantage of its capabilities to simplify compression, decompression, and archiving operations. From basic tasks to advanced streaming and self-extracting options, ZipArchive provides flexibility for a wide range of archiving operations.

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