spl_classes()
(PHP 5, PHP 7)
返回所有可用的SPL类
说明
spl_classes(void): array
本函数返回当前所有可用的 SPL 类的数组。
参数
此函数没有参数。
返回值
Returns an array containing the currently available SPL classes.
范例
spl_classes() example
<?php print_r(spl_classes()); ?>
以上例程的输出类似于:
Array ( [ArrayObject] => ArrayObject [ArrayIterator] => ArrayIterator [CachingIterator] => CachingIterator [RecursiveCachingIterator] => RecursiveCachingIterator [DirectoryIterator] => DirectoryIterator [FilterIterator] => FilterIterator [LimitIterator] => LimitIterator [ParentIterator] => ParentIterator [RecursiveDirectoryIterator] => RecursiveDirectoryIterator [RecursiveIterator] => RecursiveIterator [RecursiveIteratorIterator] => RecursiveIteratorIterator [SeekableIterator] => SeekableIterator [SimpleXMLIterator] => SimpleXMLIterator )