Number formatting

Hi gang- I am trying to format a number coming from a csv file that I am importing then sending to a database. Being the wonderful program that Excel is there is a column that contains a number that only has a decmimal if there is a value. So 3.05% will display, 3% will display as 3. It is throwing my calculations off, I have tried using number format like this: $aprTemp = number_format($apr, 2); which in the case of 3.05 will return 305.00 and 300.00 for 3%. Anyone have a snippet to test and display properly so that 3% would be 3.00, etc. Thanks, -Scott