Description
int 
ibase_timefmt ( string format [, int columntype])
     Sets the format of timestamp, date or time type columns returned
     from queries. Internally, the columns are formatted by c-function
     strftime(), so refer to its documentation regarding to the format
     of the string. columntype is one of the
     constants IBASE_TIMESTAMP, IBASE_DATE and IBASE_TIME. If omitted,
     defaults to IBASE_TIMESTAMP for backwards compatibility.
    
     
    
     You can also set defaults for these formats with PHP configuration
     directives ibase.timestampformat, ibase.dateformat and ibase.timeformat.
    
注: 
      columntype was added in PHP 4.0. It has any
      meaning only with InterBase version 6 and higher.
     
注: 
      A backwards incompatible change happened in PHP 4.0 when PHP
      configuration directive ibase.timeformat was renamed to
      ibase.timestampformat and directives ibase.dateformat and
      ibase.timeformat were added, so that the names would match better
      their functionality.