File "getTypeKeyByExtension.php"

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<?php
/***************************************************************
*  Copyright notice
*
*  (c) 2003-2004 Tobias Bender (tobias@phpXplorer.org)
*  All rights reserved
*
*  This script is part of the phpXplorer project. The phpXplorer project is
*  free software; you can redistribute it and/or modify
*  it under the terms of the GNU General Public License as published by
*  the Free Software Foundation; either version 2 of the License, or
*  (at your option) any later version.
*
*  The GNU General Public License can be found at
*  http://www.gnu.org/copyleft/gpl.html.
*  A copy is found in the textfile GPL.txt distributed with these scripts.
*
*  This script is distributed in the hope that it will be useful,
*  but WITHOUT ANY WARRANTY; without even the implied warranty of
*  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
*  GNU General Public License for more details.
*
*  This copyright notice MUST APPEAR in all copies of the script!
***************************************************************/

function getTypeKeyByExtension($fileName){
	GLOBAL $extensionToType;

	$extKey = "";

	$strExt = $fileName;

	do
	{
		$arrExt = explode(".", $strExt);
		unset($arrExt[0]);
		$strExt = implode(".", $arrExt);

		if(isset($extensionToType[$strExt]))
			$extKey = $extensionToType[$strExt];

		if($extKey == "" and isset($extensionToType[strToLower($strExt)]))
			$extKey = $extensionToType[strToLower($strExt)];

	}while(sizeof($arrExt) > 1 and $extKey == "");

	return $extKey;
}

?>