utils.php

<?php

/**
	* Returns the temporary dir
	*
	* Based on http://www.phpit.net/
	* article/creating-zip-tar-archives-dynamically-php/2/
	*
	* changed to prevent SAFE_MODE restrictions
	*
	* @return	string	System temp dir
	*/
function sys_get_temp_dir_my() {
    // Try to get from environment variable
  	if ( !empty( $_ENV['TMP']) && is__writable($_ENV,'TMP') ) {
		return realpath( $_ENV['TMP']);
  	} elseif ( !empty( $_ENV['TMPDIR']) && is__writable($_ENV,'TMPDIR') ) {
		return realpath( $_ENV['TMPDIR']);
  	} elseif ( !empty( $_ENV['TEMP']) && is__writable($_ENV,'TEMP') ) {
		return realpath( $_ENV['TEMP'] );
  	}
  	// Detect by creating a temporary file
  	else {
    	// Try to use system's temporary directory
    	// as random name shouldn't exist
    	$temp_file = tempnam( sys_get_temp_dir(), md5( uniqid( rand(), TRUE)));
		if ( $temp_file ) {
			if (!is__writable(dirname( $temp_file))) {
				unlink( $temp_file );

				// Last resort: try index folder
				// as random name shouldn't exist
				$temp_file = tempnam(realpath("index/"), md5( uniqid( rand(), TRUE)));
			}

			$temp_dir = realpath( dirname( $temp_file));
			unlink( $temp_file );

			return $temp_dir;
		} else {
			return FALSE;
		}
	}
}



function is__writable($path) {
	//will work in despite of Windows ACLs bug
	//NOTE: use a trailing slash for folders!!!
	//see http://bugs.php.net/bug.php?id=27609
	//see http://bugs.php.net/bug.php?id=30931

    if ($path{strlen($path)-1}=='/') // recursively return a temporary file path
        return is__writable($path.uniqid(mt_rand()).'.tmp');
    else if (is_dir($path))
        return is__writable($path.'/'.uniqid(mt_rand()).'.tmp');
    // check tmp file for read/write capabilities
    $rm = file_exists($path);
    $f = @fopen($path, 'a');
    if ($f===false)
        return false;
    fclose($f);
    if (!$rm)
        unlink($path);
    return true;
}

?>