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<?php
/**************************************
seesaw associates | <a href="http://seesaw.net" >http://seesaw.net</a>

client:
file:
description:

Copyright (C) 2008 Matt Kenefick(.com)
**************************************/

class zipArch {
/**
* 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 of 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
$this->create_dirs($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)
$this->create_dirs($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($file_name, 0777);
echo "<span style="color:#1da319;">file saved: </span>".$file_name."<br />";
}
else
{
echo "<span style="color:red;">file 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);
}
}
}
}

}
?>

source