PHP 8.3 vs 8.4 vs 8.5: Real-World Performance Benchmark (2026)
PHP 8.5 was released in late 2025, bringing new syntax features like the pipe operator (|>) and improved JIT compilation. But how much faster is it compared to PHP 8.3 and 8.4 in real-world scenarios?
I ran 1,000 requests with 15 concurrent users on identical hardware, testing CPU-intensive workloads (Fibonacci calculation + loop operations). The results show that PHP 8.5 offers modest improvements, while PHP 8.3 remains a solid choice for production.
This benchmark is fully reproducible—all test scripts and commands are included below.