Files and Directories

Directory Recursion

Type:	code fragment
Added by:	kuzb
Entered:	23/12/2001
Last modified:	01/12/2001
Rating:	- (fewer than 3 votes)
Views:	9118

This handy little function will, given a starting directory, return an array of directories contained within the original directory. It does this by using recursion, a process by which a function calls itself repeatadly, until all conditions are met. Syntax is Array RecurseDir (string starting_directory)

<?php
function RecurseDir($basedir, $AllDirectories=array()) {

                                    #Create array for current directories contents

                                    $ThisDir=array();

                                    #switch to the directory we wish to scan

                                    chdir($basedir);

                                    $current=getcwd();

                                    #open current directory for reading

                                    $handle=opendir(".");

                                    while ($file = readdir($handle)) {

                                            #Don't add special directories '..' or '.' to the list

                                            if (($file!='..') & ($file!='.')) {

                                                    if (is_dir($file)) {


                                                            #build an array of contents for this directory


                                                            array_push($ThisDir,$current.'/'.$file);


                                                    }

                                            }

                                    }

                                    closedir($handle);

                                    #Loop through each directory,  run RecurseDir function on each one

                                    foreach ($ThisDir as $key=>$var) {

                                            array_push($AllDirectories, $var);

                                            $AllDirectories=RecurseDir($var, $AllDirectories);

                                    }

                                    #make sure we go back to our origin

                                    chdir($basedir);

                                    return $AllDirectories;

                            }
?>

Usage Example

<?

                            $dirlist=RecurseDir("/home/ben");

                            foreach ($dirlist as $key=>$val) {

                                echo $val;

                            }
 ?>

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