is_readable
PHP function
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(PHP 4, PHP 5, PHP 7, PHP 8)
Tells whether a file exists and is readable
Description
is_readable(string $filename): bool
Tells whether a file exists and is readable.
Parameters
filenamePath to the file.
Return Values
Returns true if the file or directory specified by filename exists and is readable, false otherwise.
Errors/Exceptions Failure
Examples
is_readable() example
php
<?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').
Clearstatcache Stat
Note
The check is done using the real UID/GID instead of the effective one.
This function may return true for directories. Use is_dir() to distinguish file and directory.