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').
Access-check-cache 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.