byte ordering functions

http://wxxweb.blog.163.com/blog/static/135126900201022133740759/ big end mode and small terminal modeFirst, the concept and detailed explanationThere are two main types of byte storage mechanisms used in computers of various systems: Big-endian and

This series helps beginners learn about the development of a telephone ordering system based on a multi-layer C/S structure. Profit Simplified some specific requirements for beginners. Hope to be useful to new users and hope for deficiencies Please

Editor loading... little knowledge: byte ordering is rarely concerned, because it is rarely used. What is the byte order? Let's look at an example. Suppose there is a word-type variable whose value is 0x7788. How does it store it in the memory?

First, why does the size end mode appear? Different CPU sizes are inconsistent with the size-end mode.The X86 is a small-end mode. and Keil C51 is the big-endian mode. Very much arm. DSP is a small-end mode. Some arm processors can also be hardware

The byte order refers to the order in which multibyte data is stored in the computer's memory or when it is transmitted over the network. The following are the main 2 kinds of common: Small-endian (Little-endian): Low-bit bytes are emitted

refer to a set of function pack,unpack before looking at the following example. Any language with socket operation has a function dedicated to the package, PHP is no exception of course this set of functions is not just a package.Here's a quick

PHP string comparison functions strcmp () and strcasecmp () use summary, strcmpstrcasecmp Comparing strings is one of the most important features of string handling in any programming language. In addition to using the comparison operation notation

1 Find the character position function: Strpos ($str, Search,[int]): Find the first position of search in $str starting with int; Stripos ($str, search,[int]): function returns the position of the first occurrence of a string in another string. This

Table 12.14 Conversion Functions (cast function) name Description BINARY Converts a string to a binary string CAST() Convert a value to a specific type

Comparing strings is one of the most important features of string processing in any programming language. In addition to using comparison notation (= =, ) in PHP, a series of comparison functions are provided to enable PHP to perform more complex