Extract Zip Files in PHP is a process of decompressing the files stored in a zip archive and extracting them to a specified location on the server. This process can be done without any additional libraries or modules, using built-in PHP functions.

The basic method for extracting a Zip file in PHP is to use the zip_open function to open the zip archive, and then use the zip_read function to read the contents of the archive. Once the contents have been read, the zip_entry_open function can be used to open a specific file within the archive, and the zip_entry_read function can be used to read the contents of that file. The extracted file can then be saved to a specified location on the server using the file_put_contents function.

It’s important to note that the process of extracting zip files in PHP is resource-intensive, and can be slow for large archives or a high volume of requests. To avoid performance issues, it’s recommended to extract the files in a background process and to set time and memory limits for the script.

Additionally, when extracting zip files, it’s also important to ensure that the file is coming from a trusted source and to validate the file before extracting to prevent any malicious code from being executed on the server.

Extract Zip Files in PHP

<?php
function fun_zip_file($zip_file_name,$extract_path)
{
	$zip = new ZipArchive;
	$res = $zip->open($zip_file_name); 
	if ($res === TRUE)
	{
	  $zip->extractTo($extract_path); 
	  $zip->close();
	  echo 'Zip File Extracted successfully..';
	}
	else 
	{
	  echo 'Failed to Extract Zip File';
	}
}
//"samplezipfile.zip" is the name of the zip file and "extracted_file/" File extract location
echo fun_zip_file('samplezipfile.zip','extracted_file/');
?>

The extractTo function in PHP is a method used to extract the contents of a Zip archive to a specified directory. It is a part of the PHP ZipArchive class, which provides an easy-to-use interface for working with zip files.

To use the extractTo function, you first need to create an instance of the ZipArchive class using the new keyword, and then open the archive using the open method. Once the archive is open, you can use the extractTo method to extract the files in the archive to a specified directory.