<?php$bool = interface_exists ( "MyInterface""ArrayAccess""Countable""DateTimeInterface""Iterator""IteratorAggregate""JsonSerializable""MongoDB\BSON\Persistable""MongoDB\BSON\Serializable""MongoDB\BSON\Type""MongoDB\BSON\Unserializable""MongoDB\Driver\Exception\Exception""OuterIterator""RecursiveIterator""Reflector""SeekableIterator""Serializable""SessionHandlerInterface""SessionIdInterface""SessionUpdateTimestampHandlerInterface""SplObserver""SplSubject""Throwable""Traversable" ✓?, // string $interface_name falsetrue ✓? // [bool $autoload = true]);?>
$bool = false
false
#1
interface_exists
("MyInterface")
#2
("ArrayAccess")