PHP is_writable() Function
Definition and Usage
The is_writable() function determines whether the specified file is writable.
Syntax
is_writable(file)
| Parameters | Description |
|---|---|
| file | Required. Specifies the file to be checked. |
Description
Returns true if the file exists and is writable.file The parameter can be a directory name that allows for read and write checks.
Tips and Comments
Note:The result of this function will be cached. Please use clearstatcache() to clear the cache.
Example
<?php
$file = "test.txt";
if(is_writable($file))
{
echo ("$file is writable");
}
else
{
echo ("$file is not writable");
}
?>
Output:
test.txt is writable
