Try Rector Online | Rector - Automated Way to Instantly Upgrade and Refactor any PHP code

Run Rector on your code to see what it can do for you:

 <?php
 
-echo $foo{bar};
+echo $foo[bar];

PHP snippet to change

<?php

echo $foo{bar};

Applied Rules:

CurlyToSquareBracketArrayStringRector

Not a change you expect?

Create an issue on GitHub
...or to speed up fix – add a test fixture

Config rector.php

<?php

use Rector\Config\RectorConfig;
use Rector\Set\ValueObject\SetList;

return RectorConfig::configure()
    ->withSets([
        SetList::PHP_74,
    ]);

Rector version: 13f7ab - released at 2026-01-07 13:19