Codeedoc - Programming Blog

Extract ZIP Files In PHP

<?php
/**
 * Unzip the source_file in the destination dir
 *
 * @param   string      The path to the ZIP-file.
 * @param   string      The path where the zipfile should be unpacked, if false
 * the directory of the zip-file is used
 * @param   boolean     Indicates if the files will be unpacked in a directory
 * with the name f the zip-file (true) or not (false) (only if the destination
 * directory is set to false!)
 * @param   boolean     Overwrite existing files (true) or not (false)
 *
 * @return  boolean     Succesful or not
 */

function unzip($src_file, $dest_dir=false, $create_zip_name_dir=true, $overwrite=true)
{
  if(function_exists(“zip_open”))
  {
      if(!is_resource(zip_open($src_file)))
      {
          $src_file=dirname($_SERVER[‘SCRIPT_FILENAME’]).“/”.$src_file;
      }

      if (is_resource($zip = zip_open($src_file)))
      {
          $splitter = ($create_zip_name_dir === true) ? “.” : “/”;
          if ($dest_dir === false)
          $dest_dir = substr($src_file, 0, strrpos($src_file, $splitter)).“/”;

          // Create the directories to the destination dir if they don’t already exist
          create_dirs($dest_dir);

          // For every file in the zip-packet
          while ($zip_entry = zip_read($zip))
          {
            // Now we’re going to create the directories in the destination directories

            // If the file is not in the root dir
            $pos_last_slash = strrpos(zip_entry_name($zip_entry), “/”);
            if ($pos_last_slash !== false)
            {
              // Create the directory where the zip-entry
              // should be saved (with a “/” at the end)
              create_dirs($dest_dir.substr(zip_entry_name($zip_entry), 0, $pos_last_slash+1));
            }

            // Open the entry
            if (zip_entry_open($zip,$zip_entry,“r”))
            {

              // The name of the file to save on the disk
              $file_name = $dest_dir.zip_entry_name($zip_entry);

              // Check if the files should be overwritten or not
              if ($overwrite === true || $overwrite === false && !is_file($file_name))
              {
                // Get the content of the zip entry
                $fstream = zip_entry_read($zip_entry, zip_entry_filesize($zip_entry));          

                if(!is_dir($file_name))
                file_put_contents($file_name, $fstream );
                // Set the rights
                if(file_exists($file_name))
                {
                    chmod($file_name, 0777);
                    echo “<span style=\”color:#1da319;\”>Saved: </span>”.$file_name.“<br />”;
                }
                else
                {
                    echo “<span style=\”color:red;\”>Not found: </span>”.$file_name.“<br />”;
                }
              }

              // Close the entry
              zip_entry_close($zip_entry);
            }
          }
          // Close the zip-file
          zip_close($zip);
      }
      else
      {
        echo “No Zip Archive Found.”;
        return false;
      }

      return true;
  }
  else
  {
      if(version_compare(phpversion(), “5.2.0″, “<”))
      $infoVersion=“(use PHP 5.2.0 or later)”;

      echo “You need to install/enable the php_zip.dll extension $infoVersion”;
  }
}

function create_dirs($path)
{
  if (!is_dir($path))
  {
    $directory_path = “”;
    $directories = explode(“/”,$path);
    array_pop($directories);

    foreach($directories as $directory)
    {
      $directory_path .= $directory.“/”;
      if (!is_dir($directory_path))
      {
        mkdir($directory_path);
        chmod($directory_path, 0777);
      }
    }
  }
}
?>