PHP opendir() Function Usage and Example

PHP Directory Reference Manual

The opendir() function opens a directory handle

Syntax

resource opendir(string $path[, resource $context]);

Definition and Usage

　Open a directory handle that can be used in subsequent closedir(), readdir(), and rewinddir() calls.

Parameter

Return value

If successful, it returns a resource handle of the directory, and if it fails, it returns FALSE.
If path is not a valid directory or cannot be opened due to permission restrictions or file system errors, opendir() returns FALSE and generates a PHP E_WARNING level error message. You can add the '@' symbol before opendir() to suppress the output of the error message.

Online Example

The following is the usage of this function: open a directory, read its contents, and then close it:

<?php
　　　$dir = opendir("/var/www/images");
　　　while (($file = readdir($dir)) !== false) {
　　　　　　echo "filename:　" . $file . "<br"　/>";
　　　}
　　　closedir($dir);
?>

Output result:

filename:　.
filename:　..
filename:　logo.gif
filename:　mohd.gif