how to check file exist or not in php? code example

Example 1: php file exist

<?php
$filename = '/path/to/foo.txt';

if (file_exists($filename)) {
    echo "The file $filename exists";
} else {
    echo "The file $filename does not exist";
}
?>

Example 2: file exist php

if (file_exists($filePath)) {
  // todo acction
}