PHP infinite directory traversal code example

In PHP development, we often encounter various problems. Today, I want to achieve infinite traversal of directories in PHP, but it is difficult to implement this method. After searching some information on the Internet, I can achieve unlimited traversal in PHP. The table of contents is not that difficult, just take a look at it now.

The functions used are:

isset() to determine whether a variable is defined

chdir() to change the current directory to the specified directory.

opendir() opens a directory.

readdir() reads a directory.

getcwd(). Get the current directory.

I also used for if GET to pass the value, which is about these things:

The following is the code:

if(isset($_GET['id']))//Determine whether to pass the value

{

$s=str_replace(' ','+',$_GET['id']);

$s=base64_decode($s);//The value accepted is generally the directory to be opened Absolute road strength

chdir($s);//Switch to the directory to be opened

}

$a=opendir('.');//Open the current directory

while(false!==($c =readdir($a)))//Loop through the file names of the directory contents

{           

                                                                                                                                                                        ')

                                                                                                                                                  )

                                                                                                                                                                           ​, '\')))))); // The current path plus the directory name is the absolute path of the directory

echo "." & Lt; a href = '6.php? ID = $ w' & gt; ;/a>
";//When you click to open, pass the absolute path to be opened. Use chdir to switch to the directory to be opened. wd( ). '\'. $ C); // The current path plus the directory name is the absolute path of the directory

echo "$ c". "& lt; a href = '6.php? ID = $ w' & gt; open
";//When you click to open, pass the absolute path to be opened. Use chdir to switch to the directory you want to open.

               else

                                                     

                                                                                                         echo "$c is not a directory
"; The path must be an absolute path, don't make a mistake, I hope it can help everyone.

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