(PHP 5 >= 5.3.0, PHP 7)
GlobIterator::count — Get the number of directories and files
Gets the number of directories and files found by the glob expression.
此函数没有参数。
The number of returned directories and files, as an integer.
Example #1 GlobIterator::count() example
<?php
$iterator = new GlobIterator('*.xml');
printf("Matched %d item(s)\r\n", $iterator->count());
?>
以上例程的输出类似于：
Matched 8 item(s)