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32 articlesDeep, practical knowledge

Croatia’s 2026 E-Invoice Rule Forces PHP Apps to Rewrite 62 Validation Rules

From 1 January 2026 every B2B transaction in Croatia must pass a Schematron file written in XSLT 2.0, but PHP’s built-in libxslt only supports XSLT 1.0. Developers must either add a native Saxon-C extension, call an external service, or re-code the 62 checks in PHP to keep invoicing alive.

PHP · 4 min read

Cloudflare Workers Cut Video Site Thumbnail CPU to Zero

By moving thumbnail generation to Cloudflare Workers, the video-hosting platform eliminated all image-processing load on its origin servers, achieved a 96% edge cache hit rate, and consistently delivered sub-second image responses worldwide.

PHP · 3 min read