PHP를 사용하여 어떻게 안전하고 효율적으로 ZIP 파일을 추출할 수 있습니까?

<?php
$master = $_GET["master"];
system('unzip $master.zip'); // Incorrect syntax
?>

system("unzip $master.zip");

<?php
$zip = new ZipArchive;
$res = $zip->open('file.zip');
if ($res === TRUE) {
  $zip->extractTo('/myzips/extract_path/');
  $zip->close();
  echo 'Extraction successful!';
} else {
  echo 'Extraction failed: ' . $zip->getStatusString();
}
?>

<?php
$file = 'file.zip';
$path = pathinfo(realpath($file), PATHINFO_DIRNAME);

$zip = new ZipArchive;
$res = $zip->open($file);
if ($res === TRUE) {
  $zip->extractTo($path);
  $zip->close();
  echo "Extraction complete!";
} else {
  echo "Extraction failed: " . $zip->getStatusString();
}
?>