Usage and Examples of PHP is_writeable() Function

PHP Filesystem Reference Manual

The is_writeable() function can check if a specified file is writable. If the file is writable, this function can return true. It is an alias of the is_writable() function.

Syntax

bool is_writeable ( string $filename )

Online Example

<?php
　　　$file = "/PhpProject/php/phptest.txt
　　　if(is_writeable($file)) {
　　　　　　　echo("$file is writable");
　　　} else {
　　　　　　　echo("$file is not writable");
　　　}
?>

Output Result

/PhpProject/php/phptest.txt is writable

PHP Filesystem Reference Manual