Sep 7, 2023 · Backend Development

PHP strtolower() Function: Syntax, Parameters, Return Value, Examples, and Usage Tips

The article explains PHP's strtolower() function, detailing its syntax, parameters, return value, and providing multiple code examples—including full string conversion, partial conversion, word-level manipulation, and multibyte handling—while also noting important considerations for case sensitivity and non‑alphabetic characters.

BackendPHPString Functions

0 likes · 5 min read

PHP strtolower() Function: Syntax, Parameters, Return Value, Examples, and Usage Tips

Beike Product & Technology

Jun 18, 2020 · Backend Development

Optimizing PHP strtolower with SSE2 in PHP 8

This article explains how PHP's case‑insensitive function handling can be accelerated by implementing a locale‑independent strtolower using SSE2 SIMD instructions in PHP 8, compares it with previous table‑lookup methods, and discusses a further Yaf‑specific optimization.

BackendPHPSIMD

0 likes · 6 min read

Optimizing PHP strtolower with SSE2 in PHP 8