Tells whether a file exists and is readable (original) (raw)

is_readable

(PHP 4, PHP 5, PHP 7)

is_readable — Tells whether a file exists and is readable

Description

is_readable ( string $filename ) : bool

Parameters

filename

Path to the file.

Return Values

Returns TRUE if the file or directory specified byfilename 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'; } ?>

Errors/Exceptions

Upon failure, an E_WARNING is emitted.

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.

This function may return TRUE for directories. Useis_dir() to distinguish file and directory.

See Also

• is_writable() - Tells whether the filename is writable
• file_exists() - Checks whether a file or directory exists
• fgets() - Gets line from file pointer