571670b1_PHP__Introduction___Manual_Available_types_of_fields_Format
[Field] N [dBase Type] Number [Additional information] You must declare a length and a precision (the number of digits after the decimal point) [Format] 
A number
n / a
Y Y Y Y M M D D
A n u m b e r
A s t r i n g
T o r Y f o r T R U E , F o r N f o r F A L S E
A f l o a t n u m b e r
PHP: Introduction - Manual
Format