Which rule can I use to change variable name?

Question

I need to replace all occurencies of $connection with $link?

I know I could do with a regexp replacement using my IDE, but I need to be able to re-run the sostitution automatically.

So I want to use rector.

Is there a way to replace a var name ? Which is the rule name?

Answer 1

I create a custom rule, very specific for my needs

<?php

namespace Rules;


use PhpParser\Node;
use Rector\Core\Rector\AbstractRector;
use Symplify\RuleDocGenerator\ValueObject\RuleDefinition;
use PhpParser\Node\Expr\Variable;
class ReplaceConnectionVarNameWithLink extends AbstractRector
{

    public function getNodeTypes(): array
    {
        return [
          Variable::class
        ];
    }

    public function getRuleDefinition(): \Symplify\RuleDocGenerator\ValueObject\RuleDefinition
    {
        return new RuleDefinition(
            'rename $connect into $link',
            []
        );
    }

    public function refactor(\PhpParser\Node $node)
    {

        if (!$this->isName( $node, 'connection')) {
            // return null to skip it
            return null;
        }

        $node->name = "link";
        return $node;
    }
}