PHPStan: Fix level 6 errors

adminer/call.inc.php

@@ -91,9 +91,14 @@ if ($in) {
 
 <pre>
 <?php
+/** Format string as table row
+* @param string
+* @return string HTML
+*/
 function pre_tr($s) {
 	return preg_replace('~^~m', '<tr>', preg_replace('~\|~', '<td>', preg_replace('~\|$~m', "", rtrim($s))));
 }
+
 $table = '(\+--[-+]+\+\n)';
 $row = '(\| .* \|\n)';
 echo preg_replace_callback(