ForeachAnalyzer.php

<?php

declare(strict_types=1);

namespace Rector\CodeQuality\NodeAnalyzer;

use PhpParser\Node\Expr;
use PhpParser\Node\Expr\ArrayDimFetch;
use PhpParser\Node\Expr\Assign;
use PhpParser\Node\Stmt\Expression;
use PhpParser\Node\Stmt\Foreach_;
use Rector\PhpParser\Comparing\NodeComparator;

final readonly class ForeachAnalyzer
{
    public function __construct(
        private NodeComparator $nodeComparator,
    ) {
    }

    /**
     * Matches$
     * foreach ($values as $value) {
     *      <$assigns[]> = $value;
     * }
     */
    public function matchAssignItemsOnlyForeachArrayVariable(Foreach_ $foreach): ?Expr
    {
        if (count($foreach->getStmts()) !== 1) {
            return null;
        }

        $onlyStatement = $foreach->getStmts()[0];
        if ($onlyStatement instanceof Expression) {
            $onlyStatement = $onlyStatement->expr;
        }

        if (! $onlyStatement instanceof Assign) {
            return null;
        }

        if (! $onlyStatement->var instanceof ArrayDimFetch) {
            return null;
        }

        if ($onlyStatement->var->dim instanceof Expr) {
            return null;
        }

        if (! $this->nodeComparator->areNodesEqual($foreach->valueVar, $onlyStatement->expr)) {
            return null;
        }

        return $onlyStatement->var->var;
    }
}