The is_writable Function
The is_writable function checks whether the specified file or directory exists
and is writable. It takes the path to the file or directory as a parameter.
The function returns true if writing is possible, and false otherwise.
Syntax
is_writable(filename);
Example
Let's check if the file 'test.txt' is writable:
<?php
$res = is_writable('test.txt');
var_dump($res);
?>
Code execution result:
true
Example
Let's check the accessibility of a non-existent file:
<?php
$res = is_writable('nonexistent.txt');
var_dump($res);
?>
Code execution result:
false
Example
Let's check the writability of a directory:
<?php
$res = is_writable('/path/to/directory');
var_dump($res);
?>
Code execution result:
true
See Also
-
the
is_readablefunction,
which checks readability -
the
is_executablefunction,
which checks executability -
the
chmodfunction,
which changes access permissions
