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If you are new to PHP or just need to refresh your skills, this is the place to start. This series of tutorials will give you the basic knowledge you will need to create a simple PHP website.

PHP is a reflective programming language originally designed for producing dynamic web pages.[1] PHP is used mainly in server-side scripting, but can be used from a command line interface or in standalone graphical applications. Textual User Interfaces can also be created using ncurses.

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is_dir

(PHP 3, PHP 4, PHP 5)

is_dir -- Tells whether the filename is a directory

Description

bool is_dir ( string filename )

Returns TRUE if the filename exists and is a directory. If filename is a relative filename, it will be checked relative to the current working directory.

Note: The results of this function are cached. See clearstatcache() for more details.

Example 1. is_dir() example

<?php
var_dump(is_dir('a_file.txt')) . "\n";
var_dump(is_dir('bogus_dir/abc')) . "\n";

var_dump(is_dir('..')); //one dir up
?>

The above example will output:

bool(false)
bool(false)
bool(true)

Tip: As of PHP 5.0.0 this function can also be used with some URL wrappers. Refer to Appendix N for a listing of which wrappers support stat() family of functionality.

See also chdir(), dir, opendir(), is_file() and is_link().

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Another Useful functions:


function.is-dir |


PHP is a widely-used general-purpose scripting language that is especially suited for Web development and can be embedded into HTML. If you are new to PHP and want to get some idea of how it works, try the introductory tutorial. After that, check out the online manual, and the example archive sites and some of the other resources available in the links section.