Not implemented stub (ARCH7191)

Key php.quality.not-implemented-stub · Severity warning · Category quality

“Not implemented” exceptions or placeholders left on production paths cause unexpected runtime failures. Finish the stub.

Incorrect

<?php
class PdfExporter implements Exporter
{
    public function export(Report $report): string
    {
        throw new \RuntimeException('not implemented');
    }
}

Correct

<?php
class PdfExporter implements Exporter
{
    public function export(Report $report): string
    {
        return $this->renderer->render($report->toView());
    }
}

Fix

Complete the stub body with a real implementation, or remove the type from shippable code.