Mine

<?PHP$charset = "0123456789ABCDEF";$hex = "0xB00B5";$dec = hexToDec($hex);if(!$dec) { echo "Not a valid hexadecimal"; } else { echo "$hex in decimal = ".$dec; }Function hexToDec($hex) {global $charset;if($hex{0} == "0" && $hex{1} == "x") {	$len = strlen($hex);	for($i=2;$i<$len;$i++) {		$luku = $len-$i-1;		$pos = strpos($charset, $hex{$i});		$dec = $dec + intval(		$pos*(pow(16,($luku))) 	);}return $dec;	} else {		return 0;	}}?>