The get_declared_interfaces() function returns an array of all declared interfaces.
Syntax
get_declared_interfaces(void)
Parameters
void − No parameter is needed
Return
The get_declared_interfaces() function returns an array of all declared interfaces.
Example
The following is an example −
<?php print_r(get_declared_interfaces()); ?>
Output
Array ( [0] => Traversable [1] => IteratorAggregate [2] => Iterator [3] => ArrayAccess [4] => Serializable [5] => Throwable [6] => DateTimeInterface [7] => Reflector [8] => RecursiveIterator [9] => OuterIterator [10] => Countable [11] => SeekableIterator [12] => SplObserver [13] => SplSubject [14] => SessionHandlerInterface [15] => SessionIdInterface [16] => SessionUpdateTimestampHandlerInterface [17] => JsonSerializable )