Description
int 
db2_field_width ( resource stmt, mixed column )
   Returns the width of the current value of the indicated column in a result
   set. This is the maximum width of the column for a fixed-length data type,
   or the actual width of the column for a variable-length data type. 
  
Return Values
   Returns an integer containing the width of the specified character or
   binary data type column in a result set. If the specified column does not
   exist in the result set, db2_field_width() returns
   FALSE.