Use php to determine whether the file exists, whether it is readable, and whether the directory exists

$file = 'bbs.it-home.org.php';
if (is_readable($file) == false) {
die('The file does not exist or cannot be read' );
} else {
echo 'exists';
}
?>

is_readable() function determines whether the specified file name is readable. Returns TRUE if the specified file or directory exists and is readable

Example 2:

$filename = 'bbs.it-home.org.php';
if (file_exists($filename)) {
echo "The file $filename exists";
} else {
echo "The file $filename does not exist";
}
?>

file_exists -- Check whether the file or directory exists illustrate bool file_exists (string filename) Returns TRUE if the file or directory specified by filename exists, FALSE otherwise.

Example 3:

$file = 'bbs.it-home.org.php';
if (is_file($file) == false) {
die('The file does not exist or cannot be read ');
} else {
echo 'exists';
}
?>

is_file -- Determine whether the given file name is a normal file illustrate bool is_file (string filename) Returns TRUE if the file exists and is a normal file.