PHP 性能优化涵盖 OPcache(缓存编译代码——最大的收益)、JIT 编译器(PHP 8)、高效代码、数据缓存和数据库优化。现代 PHP 8.x 的速度比旧版本快得多,适当的配置很重要。
OPcache — 必要的优化
Without OPcache: PHP RE-COMPILES every .php file to bytecode on EVERY request (slow!).
With OPcache: compiled bytecode is CACHED in memory → subsequent requests skip
compilation entirely → often 2-3x faster. ALWAYS enable it in production.
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