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.
/* InterBase 6 TIME-type columns will be returned in
* the form '05 hours 37 minutes'. */
ibase_timefmt("%H hours %M minutes", IBASE_TIME);
You can set defaults for these formats with the PHP configuration directives ibase.timestampformat, ibase.dateformat and ibase.timeformat.
This function has been removed from PHP 5, use ini_set() instead.