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PHP Traversable interface
Article Introduction:Introduction Traversable is an abstract interface and therefore cannot be directly implemented by any class. Usually, the Iterator or IteratorAggregate interface inherits the Traversable interface, which is used to check whether the implementation class can traverse using the foreach structure in PHP. Some built-in classes implement this interface and can be used in foreach without implementing the iterator interface. Since Traversable is an abstract interface, it does not have any methods of its own. Syntax Traversable{ //} when implementing IteratorAggregate or Iterator
2023-08-19
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