Truncating Leading Zeros - SQL Server

We have some data with leading zeros(0) like 0000012345 , 002009 , 01256000 . It should be truncated as given below..
0000012345 -> 12345
002009 -> 2009
01256000 -> 1256000
This is routine scenario, so that I have created one function, so that we can use whereever we want...

CREATE FUNCTION DBO.FNC_LeadingZeros_Truncate 
(
@String VARCHAR(2000)
) RETURNS VARCHAR(2000) AS 
BEGIN 
DECLARE @WithZeros VARCHAR(2000)
SELECT @WithZeros = @String
RETURN SUBSTRING(@WithZeros,PATINDEX('%[1-9]%',@WithZeros),LEN(@WithZeros)) 
END

Execute

SELECT DBO.FNC_LeadingZeros_Truncate ('0000023230' )

Result
23230

Cheers