is_writable
Function • Params and return types changed in PHP 8.0
Tells whether the filename is writable.
is_writable Function synopsis
is_writable(string $filename): boolParameters
$filename
Typestring
The filename being checked.
Return value
Typebool
Returns true if the $filename exists and is
writable.
Changes to the is_writable Function
PHP 8.0
- Return type added:
bool - Parameter type added for parameter #1 (
$filename):string
- is_writable($filename)
+ is_writable(string $filename): boolis_writable Function Availability
is_writable Function Availability| PHP Version | Availability |
|---|---|
| PHP 8.5Future Release | Yes |
| PHP 8.4Upcoming Release | Yes |
| PHP 8.3Supported (Latest) | Yes |
| PHP 8.2Supported | Yes |
| PHP 8.1Security-Fixes Only | Yes |
| PHP 8.0Unsupported | Yes |
| PHP 7.4Unsupported | Yes |
| PHP 7.3Unsupported | Yes |
| PHP 7.2Unsupported | Yes |
| PHP 7.1Unsupported | Yes |
| PHP 7.0Unsupported | Yes |
| PHP 5.6Unsupported | Yes |
| PHP 5.5Unsupported | Yes |
| PHP 5.4Unsupported | Yes |
| PHP 5.3Unsupported | Yes |