how to add two variables in php

Last month I specifically introduced the PHP introductory tutorial on the basic syntax of PHP introductory learning, mainly introduced several commonly used PHP tags, the composition of PHP statements, PHP comments, and so on, today's PHP

Source: CSDN http://www.csdn.net/article/2014-09-15/2821685-exploring-of-the-phpWang ShuaiAbstract: PHP as a simple and powerful language, can provide a lot of web-based language features, and from this issue of "bottom" beginning, Wang Shuai will

PHP is a simple and powerful language, providing a lot of web-appropriate language features, including the variable weak type, under the weak type mechanism, you can assign any type of value to a variable. PHP is executed by Zend Engine (hereinafter

: This article mainly introduces Wang Shuai: go deep into the PHP kernel (1)-exploring the principle of weak type variables. if you are interested in PHP tutorials, refer to it. PHP is a simple and powerful language that provides many language

: This article mainly introduces php programming notes. if you are interested in PHP tutorials, please refer to them. Three methods for php to obtain POST data Php image watermarking source code Php + ajax + json is the simplest example. Php Chinese

Three ways to get post data from PHP PHP image plus watermark source code One of the simplest examples of Php+ajax+json PHP Chinese Pinyin Source code PHP iterates through directories, generates MD5 values for each file in the directory, and writes

Php programming notes-three methods for obtaining POST data from small_123 php Php image watermarking source code Php + ajax + json is the simplest example. Php Chinese character to pinyin source code Php traverses the Directory, generates the md5

In a process of change, the constant amount is calledConstantAnd the variable isVariableIs a sequential storage space with a name. Which of the following isPHPBasic knowledge of variables and constants. This tutorial introduces PHP variables in the

What is the difference between single and double quotes in PHP? 1. As can be seen, the double-quote variable is parsed and output, and the single-quote variable is not resolved. 2. The resolution of single quotation marks is faster than double

What is the use of PHP variables? PHP variables are "containers" for storing information, PHP variables can be assigned values or expressions, so let's take a look at the naming conventions for PHP variables and the use of PHP variables. Let's look