php infinite directory traversal
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=='..') { $w=base64_encode(substr(getcwd(),0,strrpos(getcwd(),'\\')));//当前路径加上目录名 就是目录的绝对路径 echo "上一级"."<a href='6.php?id=$w'>打开</a><br />";//当点击打开时将要打开的绝对路径传递出去 用chdir 切换到要打开的目录下 }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 "$c"."<a href='6.php?id=$w'>打开</a><br />";//当点击打开时将要打开的绝对路径传递出去 用chdir 切换到要打开的目录下 } } } else { echo "$c 不是目录<br />"; } } ?>
以上就介绍了php无限遍历目录,包括了方面的内容,希望对PHP教程有兴趣的朋友有所帮助。

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