is_readable

Syntax

bool is_readable ( string $filename )

Popis

Príkaz jazyka PHP
Tells whether the filename is readable.

Parametre

filename - Path to the file.

Návratové hodnoty

Returns TRUE if the file or directory specified by filename exists and is readable, FALSE otherwise.

Poznámky

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.
The results of this function are cached. See clearstatcache for more details.
The check is done using the real UID/GID instead of the effective one.

Príklad

<?php
$filename = 'test.txt';
if (is_readable($filename)) {
echo 'The file is readable';
} else {
echo 'The file is not readable';
}
?>

Pozri aj

is_writable, file_exists, fgets