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Liangxu Linux
Liangxu Linux
Dec 23, 2025 · Fundamentals

Why char s1[] and char *s2 Aren’t the Same: Deep Dive into C Arrays vs Pointers

This article explains the fundamental differences between C arrays and pointers by examining memory layout, mutability, sizeof behavior, function parameter handling, multidimensional arrays, and practical best‑practice guidelines, providing clear code examples that reveal why declarations like char s1[] = "liangxu" and char *s2 = "liangxu" behave differently.

Embedded Cbest practicesc++
0 likes · 14 min read
Why char s1[] and char *s2 Aren’t the Same: Deep Dive into C Arrays vs Pointers
php Courses
php Courses
Nov 4, 2025 · Backend Development

count() vs sizeof(): Which PHP Function Should You Use?

This article explains that PHP’s count() and sizeof() are interchangeable aliases, demonstrates their identical behavior with examples, discusses when to prefer one over the other, and shares performance, recursion, and object‑handling tips for backend developers.

ArrayPHPRecursion
0 likes · 4 min read
count() vs sizeof(): Which PHP Function Should You Use?
Open Source Linux
Open Source Linux
Feb 27, 2024 · Fundamentals

Unlocking static, volatile, sizeof & I2C: Essential C Tips for Embedded Engineers

This article explains the roles of the static and volatile keywords, compares sizeof and strlen, shows how to reliably compare floating‑point numbers, discusses the impact of floating‑point operations on STM32 interrupt performance, and outlines the I2C protocol and address configuration for embedded systems.

C ProgrammingI2Cembedded systems
0 likes · 13 min read
Unlocking static, volatile, sizeof & I2C: Essential C Tips for Embedded Engineers
php Courses
php Courses
Jan 5, 2024 · Backend Development

Understanding PHP count() and sizeof() Functions: Differences, Usage, and Tips

This article explains the PHP count() and sizeof() functions, clarifying that they are aliases with identical behavior, showing basic usage examples, discussing when to prefer one over the other, and offering performance notes, recursive counting, and object handling tips for developers.

ArraysBackendPHP
0 likes · 4 min read
Understanding PHP count() and sizeof() Functions: Differences, Usage, and Tips
php Courses
php Courses
Jul 11, 2023 · Backend Development

How to Get Array Length in PHP Using count() and sizeof()

This article explains how to determine the length of one‑dimensional and multi‑dimensional arrays in PHP using the count() and sizeof() functions, shows code examples, discusses the two optional parameters of count(), and provides guidance on handling empty or undefined arrays.

Array_countsizeof
0 likes · 4 min read
How to Get Array Length in PHP Using count() and sizeof()