Return Values
   An indexed array with an entry for each column in the database. The array index
   starts at 0.
  
   Each array element contains an associative array of column information, as
   described here:
   
- name
- 
       The name of the column
       
- type
- 
       The human-readable name for the dbase type of the column (i.e. date,
       boolean, etc.)
       
- length
- 
       The number of bytes this column can hold
       
- precision
- 
       The number of digits of decimal precision for the column
       
- format
- 
       A suggested printf() format specifier for the column
       
- offset
- 
       The byte offset of the column from the start of the row
       
   If the database header information cannot be read, FALSE is returned.