HOME HTML CSS XML JAVASCRIPT ASP PHP SQL MORE...

PHP Basic

PHP HOME
PHP Intro
PHP Install
PHP Syntax
PHP Variables
PHP String
PHP Operators
PHP If...Else
PHP Switch
PHP Arrays
PHP While Loops
PHP For Loops
PHP Functions
PHP Forms
PHP $_GET
PHP $_POST

PHP Advanced

PHP Date
PHP Include
PHP File
PHP File Upload
PHP Cookies
PHP Sessions
PHP E-mail
PHP Secure E-mail
PHP Error
PHP Exception
PHP Filter

PHP Database

MySQL Introduction
MySQL Connect
MySQL Create
MySQL Insert
MySQL Select
MySQL Where
MySQL Order By
MySQL Update
MySQL Delete
PHP ODBC

PHP XML

XML Expat Parser
XML DOM
XML SimpleXML

PHP and AJAX

AJAX Intro
AJAX PHP
AJAX Database
AJAX XML
AJAX Live Search
AJAX RSS Reader
AJAX Poll

PHP Reference

PHP Array
PHP Calendar
PHP Date
PHP Directory
PHP Error
PHP Filesystem
PHP Filter
PHP FTP
PHP HTTP
PHP Libxml
PHP Mail
PHP Math
PHP Misc
PHP MySQL
PHP SimpleXML
PHP String
PHP XML
PHP Zip

PHP Quiz

PHP Quiz
PHP Certificate

PHP is_writeable() Function

Complete PHP Filesystem Reference

Definition and Usage

The is_writeable() function checks whether the specified file is writeable.

This function returns TRUE if the file is writeable.

This function is an alias of the is_writable() function.

Syntax

is_writeable(file)

Parameter	Description
file	Required. Specifies the file to check

Tips and Notes

Note: The result of this function are cached. Use clearstatcache() to clear the cache.

Example

<?php
$file = "test.txt";
if(is_writeable($file))
  {
  echo ("$file is writeable");
  }
else
  {
  echo ("$file is not writeable");
  }
?>

The output of the code above could be:

test.txt is writeable

Complete PHP Filesystem Reference

W3Schools' Online Certification

The perfect solution for professionals who need to balance work, family, and career building.

More than 10 000 certificates already issued!

Get Your Certificate »

The HTML Certificate documents your knowledge of HTML.

The CSS Certificate documents your knowledge of advanced CSS.

The JavaScript Certificate documents your knowledge of JavaScript and HTML DOM.

The jQuery Certificate documents your knowledge of jQuery.

The XML Certificate documents your knowledge of XML, XML DOM and XSLT.

The ASP Certificate documents your knowledge of ASP, SQL, and ADO.

The PHP Certificate documents your knowledge of PHP and SQL (MySQL).

WEB HOSTING
Best Web Hosting
PHP MySQL Hosting
Best Hosting Coupons
UK Reseller Hosting
Cloud Hosting
Top Web Hosting
$3.98 Unlimited Hosting
Premium Website Design

WEB BUILDING
Download XML Editor
FREE Website BUILDER
Best Website Templates Top CSS Templates
CREATE HTML Websites
EASY WEBSITE BUILDER

W3SCHOOLS EXAMS
Get Certified in: HTML, CSS, JavaScript, XML, PHP, and ASP

W3SCHOOLS BOOKS
New Books: HTML, CSS JavaScript, and Ajax

STATISTICS
Browser Statistics Browser OS Browser Display

SHARE THIS PAGE
Share with »