Date: 01/22/09 (Code WTF)    Keywords: no keywords

Я думал, такого в живой природе не встречается...

function MM_CheckFile_WM($checkfile) {
	list($tmpaa, $tmpab, $tmpac)=split("\.",$checkfile,3);
	if((empty($tmpab)) || ($tmpac!="")) return false;
	switch($tmpab) {
		case "Gif"	:
		case "GIF"	:
		case "gif" 	: return 'gif';
		case "jpeg"	:
		case "Jpeg"	:
		case "JPEG"	:
		case "JPG"	:
		case "Jpg"	:
		case "jpg"	: return 'jpg';
		case "PNG"	:
		case "Png"	:
		case "png"	: return 'png';
		default		: return false;
	}
}

Source: http://community.livejournal.com/code_wtf/155455.html