TYPO3 check if fe_users have valid images

check_valid_images.php

<?php
/**
 * Either execute the script on the shell or directly in the browser.
 * Place the script in the webroot and call it.
 */
if(php_sapi_name() !== 'cli') {
  echo '<pre>';
}
echo 'Connecting', PHP_EOL;
$m = new mysqli('localhost', 'name', '***', 'db');
$query = 'SELECT image FROM fe_users WHERE image IS NOT NULL';

echo 'Selecting:', PHP_EOL, $query, PHP_EOL;
$r = $m->query($query);
echo $m->error;

while($row = $r->fetch_assoc()) {
        echo 'File: ', $row['image'], (file_exists('uploads/pics/' . $row['image']) ? '' : ' does not'), ' exist', PHP_EOL;
}