is_readable

Tells whether a file exists and is readable

&reftitle.description; `bool` `is_readable` `string` `filename`

Tells whether a file exists and is readable.

&reftitle.parameters;

`filename`

- Path to the file.

&reftitle.returnvalues;

Returns &true; if the file or directory specified by `filename` exists and is readable, &false; otherwise.

&reftitle.examples;

### `is_readable` example

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

&reftitle.errors; &fs.emits.warning.on.failure;
&reftitle.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.

¬e.clearstatcache; &tip.fopen-wrapper.stat;

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.

&reftitle.seealso;

- `is_writable`
- `file_exists`
- `fgets`