Description
bool
is_readable ( string filename )
Returns TRUE if the file or directory specified by
filename exists and is readable.
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.
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';
}
?>
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Note: The results of this
function are cached. See clearstatcache() for
more details.
Tip: As of PHP 5.0.0 this function
can also be used with some URL wrappers. Refer to
Appendix M for a listing of which wrappers support
stat() family of functionality.
See also is_writable(),
file_exists(), and
fgets().
