PHP script for remotely downloading a ZIP file, extracting it, and overwriting files into a specified directory; if the specified directory does not exist, it will be created; if the directory already exists, it will be emptied. The extracted ZIP file contains files with Chinese filenames.

PHP script for remotely downloading a ZIP file, extracting it, and overwriting files into a specified directory; if the specified directory does not exist, it will be created; if the directory already exists, it will be emptied. The extracted ZIP file contains files with Chinese filenames!

I previously wrote an article titled"PHP: Remote download of a ZIP file, extract it, and overwrite it into a specified directory.You can refer to this, but after using it, I discovered a problem!

Code issue

That is, if the target directory does not exist, an error will be raised!

During the extraction process, an error occurred because the compressed file had a Chinese filename!

Of course, we could simply use the @ symbol to mask the first error directly, but after thinking about it, I still think it's better to make a change!

Problem Reflection

This time, let's refine it a bit; you can refer to this article:PHP-based archive extraction/compression tool; the archive contains a file with a Chinese name – why does an error occur after extraction?》

Here, we'll combine these two examples and then optimize the code function!

code implementation

The following example code demonstrates how to remotely download a ZIP file, extract it, and overwrite files in a specified directory; if the specified directory does not exist, it will be created; if the directory already exists, it will be emptied. The extracted ZIP file contains files with Chinese filenames:

$remoteZipUrl = 'https://example.com/remote.zip'; // 远程zip文件的URL
$localDir = '/path/to/local/dir'; // 本地目录的路径

// 如果本地目录不存在，创建目录
if (!file_exists($localDir)) {
  mkdir($localDir, 0777, true);
}

// 如果本地目录存在，清空目录
if (file_exists($localDir) && is_dir($localDir)) {
  $files = glob($localDir . '/*'); // 获取目录下的所有文件
  foreach ($files as $file) {
    if (is_file($file)) {
      unlink($file); // 删除文件
    }
  }
}

// 下载zip文件到本地临时文件
$tempFile = tempnam(sys_get_temp_dir(), 'zip');
$fp = fopen($tempFile, 'w');
$ch = curl_init($remoteZipUrl);
curl_setopt($ch, CURLOPT_FILE, $fp);
curl_exec($ch);
curl_close($ch);
fclose($fp);

// 解压zip文件到本地目录
$zip = new ZipArchive;
$res = $zip->open($tempFile);
if ($res === TRUE) {
  $zip->setOptions(array('default_charset' => 'UTF-8')); // 设置文件名编码方式为 UTF-8
  $zip->extractTo($localDir); // 解压缩到指定目录
  $zip->close();
  echo '解压缩完成';
} else {
  echo '解压缩失败';
}

// 删除本地临时文件
unlink($tempFile);

In this example, first check whether the local directory exists; if it does not exist, then use it. mkdir() The function creates a directory; if it already exists, it will be used. glob() 和 unlink() Clear directory.

Then, use it. tempnam() The function creates a temporary file for downloading a remote ZIP file. Use. curl The function downloads a ZIP file from a remote URL to a local temporary file.

Next, use. ZipArchive Open a local temporary file and set the file name encoding to UTF-8. Finally, call the function. extractTo() Method: Decompress the ZIP file into the specified directory. Once decompression is complete, delete the local temporary files.

Note: Before using this code, ensure that it is already installed on the server. ZipArchive Extend and curl expand.

function encapsulation

function downloadAndExtractZip($remoteZipUrl, $localDir) {
  // 如果本地目录不存在，创建目录
  if (!file_exists($localDir)) {
    mkdir($localDir, 0777, true);
  }

  // 如果本地目录存在，清空目录
  if (file_exists($localDir) && is_dir($localDir)) {
    $files = glob($localDir . '/*'); // 获取目录下的所有文件
    foreach ($files as $file) {
      if (is_file($file)) {
        unlink($file); // 删除文件
      }
    }
  }

  // 下载zip文件到本地临时文件
  $tempFile = tempnam(sys_get_temp_dir(), 'zip');
  $fp = fopen($tempFile, 'w');
  $ch = curl_init($remoteZipUrl);
  curl_setopt($ch, CURLOPT_FILE, $fp);
  curl_exec($ch);
  curl_close($ch);
  fclose($fp);

  // 解压zip文件到本地目录
  $zip = new ZipArchive;
  $res = $zip->open($tempFile);
  if ($res === TRUE) {
    $zip->setOptions(array('default_charset' => 'UTF-8')); // 设置文件名编码方式为 UTF-8
    $zip->extractTo($localDir); // 解压缩到指定目录
    $zip->close();
    unlink($tempFile); // 删除本地临时文件
    return true;
  } else {
    unlink($tempFile); // 删除本地临时文件
    return false;
  }
}

This function takes as parameters the URL of the remote ZIP file and the path to the local directory. It will check whether the local directory exists; if it does not, it will use the default path. mkdir() The function creates a directory; if it already exists, it will be used. glob() 和 unlink() Clear directory.

Then, use it. tempnam() The function creates a temporary file for downloading a remote ZIP file. Use. curl The function downloads a ZIP file from a remote URL to a local temporary file.

Next, use. ZipArchive Open a local temporary file and set the file name encoding to UTF-8. Finally, call the function. extractTo() Method: Decompress the ZIP file into the specified directory. Once decompression is complete, delete the local temporary files.

If the decompression is successful, the function will return. trueOtherwise, return. false。

Error:

An error occurred after running the function!!!

If you encounter any errors, please read these three articles of mine!!

《Fatal error: Call to undefined method ZipArchive::setOptions() – Solution!》

《How to check if ZipArchive is installed in your PHP environment?》

《Fatal error: Call to undefined method ZipArchive::setOptions() in /www/wwwroot/test.4s5.cn/1.php on line 37》

final project

If implementing the solution does not resolve the ZipArchive extension issue, then you may want to read this article!

《PclZip serves as a replacement for ZipArchive, resolving PHP error issues!》

Of course, if your server supports ZipArchive and the above function code is working correctly, you may skip this section.