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:

 
 var_dump(preg_match('#[0-9]+#u', '１'));
 var_dump(preg_match('#[\d]+#u', '１'));
-var_dump(preg_match('#[0-9]+#', '１'));
+var_dump(preg_match('#\d+#', '１'));
 var_dump(preg_match('#[\d]+#', '１'));

PHP snippet to change

<?php

var_dump(preg_match('#[0-9]+#u', '１'));
var_dump(preg_match('#[\d]+#u', '１'));
var_dump(preg_match('#[0-9]+#', '１'));
var_dump(preg_match('#[\d]+#', '１'));

Applied Rules:

SimplifyRegexPatternRector

Not a change you expect?

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

Config rector.php

<?php

declare(strict_types=1);

use Rector\CodeQuality\Rector\FuncCall\SimplifyRegexPatternRector;
use Rector\Config\RectorConfig;

return RectorConfig::configure()
    ->withRules([SimplifyRegexPatternRector::class]);

Rector version: 3bc3c8 - released at 2025-06-25 16:55