(PHP 5)
spl_classes — 返回所有可用的SPL类
本函数返回当前所有可用的 SPL 类的数组。
   
     Example #1 spl_classes() example 以上例程的输出类似于:
<?php
    
    
print_r(spl_classes());
?>
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
)