Replace ord($str) with ord($str[0])
-echo ord('abc');
+echo ord('a');Configure your rector.php:
<?php
use Rector\Config\RectorConfig;
use Rector\Php85\Rector\FuncCall\OrdSingleByteRector;
return RectorConfig::configure()
->withRules([
OrdSingleByteRector::class,
]);
