is_readable
(PHP 4, PHP 5)
is_readable — Tells whether the filename is readable
Description
bool is_readable
( string $filename
)
Parameters
-
filename
-
Path to the file.
Return Values
Returns TRUE if the file or directory specified by
filename
exists and is readable, FALSE otherwise.
Examples
Example #1 is_readable() example
<?php
$filename = 'test.txt';
if (is_readable($filename)) {
echo 'The file is readable';
} else {
echo 'The file is not readable';
}
?>
Notes
Keep in mind that PHP may be accessing the file as the user
id that the web server runs as (often 'nobody'). Safe mode
limitations are not taken into account before PHP 5.1.5.
Note: The results of this
function are cached. See clearstatcache() for
more details.
Note:
The check is done using the real UID/GID instead of the effective one.
is_link
