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PHP is_writable() Function

❮ PHP Filesystem Reference

Example

Check whether the specified filename is writable:

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

The output of the code above could be:

test.txt is writable


Definition and Usage

The is_writable() function checks whether the specified filename is writable.

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

Syntax

is_writable(file)

Parameter Values

Parameter Description
file Required. Specifies the path to the file to check


Technical Details

Return Value: TRUE if the file is writable, an E_WARNING on failure
PHP Version: 4.0+

❮ PHP Filesystem Reference