<?php
$myfile = "user/home/documents/gfg";
// checking whether a file is directory or not
if (is_dir($myfile)) echo ("$myfile is a directory");
else echo ("$myfile is not a directory");
?>

The file_exists() function in PHP is an inbuilt function which is used to check whether a file or directory exists or not. The path of the file or directory you want to check is passed as a parameter to the file_exists() function which returns True on success and False on failure