Function to open a directory : opendir()
Function to close a directory : closedir()
Function to read a directory : readdir()
The parameters of opendir and closedir are directory paths.
Let's look at an example.
- <?php
- echo "directory function example<br />";
- $dir = '/Applications/';
- //$dir = "c:/windows/"; //if you use windows OS
- if(is_dir($dir)){
- if($dirop = opendir($dir)){
- while(($filerd = readdir($dirop)) != false){
- echo " {$filerd} <br />";
- }
- echo "-------------------------------------- <br />";
- }
- } else {
- echo "{$dir} does not exist.<br />";
- }
- closedir($dirop);
- ?>
Result(for example MacOS)
Result(for example windows)
4line - Store the directory name in $dir.
7line - is_dir() is a function that determines whether a directory exists.
$dir is determined to be true and the following is done
8line - Use $dirop as a variable to open a directory.
$dirop = Opens a directory in opendir($dir) and outputs the folders and files in it while looping while(($filerd = readdir($dirop))! = false).
Use getcwd() to find out where the current directory is, and then use chdir() to specify the path of the directory to change.
- <?php
- echo "getcwd() , chdir() <br />";
- echo "current location <br />";
- $path = getcwd();
- echo "{$path} <br />";
- chdir("/Applications/");
- //chdir("c:/temp/"); //if you use windows OS
- $path = getcwd();
- echo "current location <br />";
- echo " $path <br />";
- ?>
