zip_entry_compressionmethod()

Warning: zip_entry_compressionmethod() was deprecated in PHP 5.3.0 and removed in PHP 7.0.0. It is no longer available in modern PHP environments. This documentation is kept for historical reference. For modern PHP, use the ZipArchive class and its getCompressionName() method.

The zip_entry_compressionmethod() function was a built-in function in PHP that was used to get the compression method of a file in a zip archive. The compression method is the algorithm used to compress the file in the zip archive.

Syntax

The syntax of the legacy zip_entry_compressionmethod() function is as follows:

Syntax of the zip_entry_compressionmethod() function in PHP

int zip_entry_compressionmethod(resource $zip_entry)

Where $zip_entry is the zip entry handle for the file in the zip archive. (Note: This function is historical and requires the legacy PECL zip extension.)

Usage Examples

Let's take a look at a practical example of using the modern ZipArchive class to get the compression method in PHP.

Example: Getting the Compression Method of a File in a Zip Archive

Suppose you have opened a zip archive using the modern PHP ZipArchive class and want to get the compression method of a file in the archive. You can use the getCompressionName() method to do this, like this:

Getting the Compression Method of a File in a Zip Archive in PHP

$zip = new ZipArchive;
if ($zip->open('example.zip') === true) {
    // get the compression method of the first file
    $compression_method = $zip->getCompressionName(0);
    echo "The compression method of the file is: " . $compression_method;
    $zip->close();
}

This code opens a zip archive file example.zip using the ZipArchive class. We then access the first file in the archive and get its compression method using getCompressionName(). Finally, the compression method is outputted to the user.

Conclusion

In this article, we've discussed the legacy zip_entry_compressionmethod() function and how it was used to get the compression method of a file in a zip archive. We've explained what the function does, its syntax, and provided a modern alternative using the ZipArchive class. By using ZipArchive and getCompressionName() in your PHP applications, you can reliably get the compression method of a file in a zip archive and use that information as needed.

Practice