Description
int 
oci_field_precision ( resource statement, int field )
     Returns precision of the field with field index
     (1-based).
    
     For FLOAT columns, precision is nonzero and scale is -127.
     If precision is 0, then column is NUMBER. Else it's 
     NUMBER(precision, scale).
    
Note: 
      In PHP versions before 5.0.0 you must use ocicolumnprecision() instead. 
      This name still can be used, it was left as alias of
      oci_field_precision() for downwards compatability. 
      This, however, is deprecated and not recommended.
     
     See also oci_field_scale() and
     oci_field_type().