(PHP 4, PHP 5, PHP 7)
Tells whether a file exists and is readable
bool is_readable ( string $filename )
Tells whether a file exists and is readable.
Parameters:
filename
Path to the file.
Returns:
Returns TRUE if the file or directory specified by filename exists and is readable, FALSE otherwise.
Exception:
Upon failure, an E_WARNING is emitted.
Notes:
The results of this function are cached. See clearstatcache() for more details.
The check is done using the real UID/GID instead of the effective one.
Examples:
is_readable() example
<?php
$filename = 'test.txt';
if (is_readable($filename)) {
echo 'The file is readable';
} else {
echo 'The file is not readable';
}
?>
See also:
fgets() -
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