PHP custom Traverse directory All Files dir (), Readdir () function

Method One: Use Dir () to traverse the directory

Dir () function, returning a directory class instance when successful

The PHP dir () syntax format is:

Dir (directory)//directory the name of the directory where the file name needs to be displayed, including path information

PHP dir () Use example: List all the file names under the upload directory:

The code is as follows
<?php $dir = @ Dir ("upload");//open upload directory; "@" to mask error messages, because sometimes you need to display files in the directory does not have files, at this time may be reported errors, with "@" to hide the error Enumerate all the files in the upload directory while (($file = $dir->read ())!== false) { echo "FileName:". $file. "<br/>"; } $dir->close (); ?>

The output results are:

Filename:.

Filename:..

FileName: logo.gif

FileName: arrow.gif

FileName: bg.gif

Example

code is as follows

&nbs P;

Function tree ($dir) {     $mydir = Dir ($di R);     while ($file = $mydir->read ())     {      & nbsp;  if ($file!= '. ' && $file!= ' ... ')         {              if (Is_dir ("$dir/$file"))             {                 Echo ' directory name: '. $dir. Directory_separator. ' <font color= "Red" > '. $file. ' </font><br/> ';                 Tree ("$dir/$file ");            }else{                  echo ' filename: '. $dir. Directory_separator. $file. ' <br/> ';            }        }    }     $mydir->close (); } Tree ('./phpmyadmin ');

Method two uses Readir () to traverse the directory

Definitions and usage

The Readdir () function returns an entry in a table of contents handle opened by Opendir ().

If successful, the function returns a filename, otherwise it returns false.

Grammar

Readdir (Dir_stream)

Example

The code is as follows

header (' Content-type:text/html;charset=utf-8 '); function Listdir ($dir) { if (Is_dir ($dir))     { if ($handle = Opendir ($dir))         { while ($file = Readdir ($handle))             { if ($file!= '. ' && $file!= ' ... ')                 { if (Is_dir ($dir. Directory_separator. $file))                     { Echo ' directory name: '. $dir. Directory_separator. ' <font color= "Red" > '. $file. ' </font><br/> '; Listdir ($dir. Directory_separator. $file); }else{ echo ' filename: '. $dir. Directory_separator. $file. ' <br/> ';                     }                 }             }         } Closedir ($handle); }else{ Echo ' is not a valid directory! ';     } } Listdir ('./phpmyadmin ');