php decompresses the zip compressed package contents to the specified directory instance

<span style="font-size:14px;"><?php
	header('Content-type:text/html;charset=utf-8');
	$filename = 'test_zip.zip';
	$path = './test_zip.zip';
	$dir = 'test_zip';
	if(!is_dir($dir)) {
		mkdir($dir, 0777, true);//Create a directory to save the decompressed content	}
	if(file_exists($filename)) {
		$resource = zip_open($filename);
		while($zip = zip_read($resource)) {
			if(zip_entry_open($resource, $zip)) {
		$file_content = zip_entry_name($zip);//Get the file name, compress the mac into zip, decompression requires filtering the resource library to hide files				$file_name = substr($file_content, strrpos($file_content, '/') +1);
				if(!is_dir($file_name) && $file_name) {
					$save_path = $dir .'/'. $file_name;
					if(file_exists($save_path)) {
					echo 'The file already exists in the folder "' . $file_name . '" <pre />';
					}else {
						echo $file_name . '<pre />';	
						$file_size = zip_entry_filesize($zip);
						$file = zip_entry_read($zip, $file_size);
						file_put_contents($save_path, $file);
						zip_entry_close($zip);
					}
					
				}
			}
		}
		zip_close($resource);
	}</span>