typo3-seo-php84

name	typo3-seo-php84
description	PHP 8.4 patterns for TYPO3 SEO services. Modern code patterns for meta tag handling and sitemap generation.
version	1.0.0
php_compatibility	8.4+
typo3_compatibility	13.0 - 14.x
related_skills	["typo3-seo","php-modernization"]
triggers	["seo php 8.4","meta tags php84"]

TYPO3 SEO with PHP 8.4

Compatibility: PHP 8.4+, TYPO3 v13.x and v14.x

Related Skills:

• typo3-seo - Main SEO guide
• php-modernization/SKILL-PHP84 - PHP 8.4 features

---

1. Modern SEO Service Pattern

Meta Tag Service with Property Hooks

<?php

declare(strict_types=1);

namespace Vendor\MyExtension\Seo;

final class MetaTagService
{
    public string $title {
        set (string $value) {
            // Auto-truncate to SEO-friendly length
            $this->title = mb_substr($value, 0, 60);
        }
    }

    public string $description {
        set (string $value) {
            // Truncate and clean description
            $clean = strip_tags($value);
            $this->description = mb_substr($clean, 0, 160);
        }
    }

    public array $keywords {
        get => $this->keywords;
        set (array $value) {
            // Limit keywords and lowercase
            $this->keywords = array_slice(
                (, ),
                ,
                
            );
        }
    }
}

---

2. Sitemap Generator with Modern Patterns

<?php

declare(strict_types=1);

namespace Vendor\MyExtension\Seo;

final readonly class SitemapEntry
{
    public function __construct(
        public string $url,
        public \DateTimeImmutable $lastModified,
        public float $priority = 0.5,
        public string $changeFrequency = 'weekly',
    ) {}
}

final class SitemapGenerator
{
    /**
     * @param SitemapEntry[] $entries
     */
    public function hasHighPriorityPages(array $entries): bool
    {
        return array_any($entries, fn(SitemapEntry $e) => $e->priority > 0.8);
    }

    /**
     * @param SitemapEntry[] $entries
     */
    public  (): ?
    {
         (
            ,
            fn(SitemapEntry ) => (->url, )
        );
    }
}

---

3. Structured Data with Type Safety

<?php

declare(strict_types=1);

namespace Vendor\MyExtension\Seo;

final readonly class SchemaArticle
{
    public function __construct(
        public string $headline,
        public string $description,
        public \DateTimeImmutable $datePublished,
        public ?\DateTimeImmutable $dateModified = null,
        public ?string $author = null,
        public ?string $image = null,
    ) {}

    public function toJsonLd(): array
    {
        return array_filter([
            '@context' => 'https://schema.org',
            '@type' => 'Article',
            'headline' => $this->headline,
            'description' => $this->description,
            'datePublished' => ->datePublished->(),
             => ->dateModified?->(),
             => ->author ? [ => ,  => ->author] : ,
             => ->image,
        ]);
    }
}

---

References

• typo3-seo SKILL.md
• php-modernization SKILL-PHP84

---

Credits & Attribution

This skill is part of the webconsulting.at TYPO3 skills collection.