在消除目录及其在PHP中的整个结构时，经常寻求递归方法。 This involves efficiently purging not only files within the target directory but also any nested subdirectories and their contents.

Solution:

The PHP manual's user-contributed section for rmdir provides a practical implementation for this recursive deletion scenario:

function rrmdir（$ dir）{ 如果（is_dir（$ dir））{ $ objects = scandir（$ dir）; foreach（$ objects作为$ object）{ if（$ object！=“。” && $ object！=“ ..”）{ if（is_dir（$dir。directory_separator。$ object）&&！is_link（$ dir。“/”。$ object））{ rrmdir（$dir。directory_separator。$ object）; } 别的 { unlink（$dir。directory_separator。$ object）; } } } rmdir（$ dir）; } } 的工作方式：