


How to achieve unlimited directory traversal in PHP development
在php开发中,我们会经常遇到各种各样的难题,想要实现php无限遍历目录,可就很难实现这一方法,经过在网上查询一些资料,阅读一些论坛,才发现php无限遍历目录并没有想象那么难,现在就看一下吧。
使用的函数有:
isset()判断某个变量是否定义
chdir() 将当前目录改变为指定的目录。
opendir() 打开目录。
readdir()读取目录。
getcwd()。获取当前目录。
还用到了for if GET传值 大概就这些东东:
下面是代码:
<?php if(isset($_GET['id']))//判断是否传值 { $s=str_replace(' ','+',$_GET['id']); $s=base64_decode($s);//接受传递的值 值一般是要打开的目录的绝对路劲 chdir($s);//切换到要打开的目录 } $a=opendir('.');//打开当前目录 while(false!==($c=readdir($a)))//循环遍历目录内容的文件名 { if(is_dir($c))//判断是目录还是文件 { if($c=='.') { } else { if($c=='..') { $w=base64_encode(substr(getcwd(),0,strrpos(getcwd(),'\\')));//当前路径加上目录名 就是目录的绝对路径 echo "上一级"."<a href="http://www.php1.cn/"> }else { $w=base64_encode(getcwd().'\\'.$c);//当前路径加上目录名 就是目录的绝对路径 echo "$c"."<a href="http://www.php1.cn/"> } } } else { echo "$c 不是目录<br />"; } } ?>
以上就是php无限遍历目录的全部内容,大家在学习的时候需要注意一个问题,就是路径一定要是绝对路径,千万不要弄错了,希望能帮助到大家。

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