php how to define variable

Answer the question in the previous section first. 01 02 $foo= 10; 03 $bar= 20; 04   05

#一, PHP variable definition: Variables are used to store values, such as numbers, text strings or arrays, V: string/integer/double/array/object Naming rules: 1. The variable name of PHP is case-sensitive. 2. The variable name must begin with $3,

Analysis of variable reference and variable destruction mechanism in PHP, PHP destruction This paper analyzes the variable reference and the mechanism of variable destruction in PHP. Share to everyone for your reference. The specific analysis is as

In this paper, we analyze the mechanism of variable reference and variable destruction in PHP. Share to everyone for your reference. The specific analysis is as follows: Variable is a very important type in PHP, we have data through variables or

In PHP, the symbol "&" represents a reference. 1, see what does not refer to this: $a   = "Hello world";//define a variable, the following assignment to $b $b = $a;//This step does not precede $a with a symbol Like this "$b = & $a". No Plus, in

Php variables are described in detail. Php variables are used to store information. syntax for defining a variable: $ variable name value. example of using a variable :? Php $ x5; $ y6; $ z $ x + $ y; echo $ z ;? Php variables A variable is a

PHP beginners learn variables and constants. In a change process, the constant volume is called a constant, while the variable is a sequential storage space with a name. The following describes the constant amount of the base of PHP variables and

: 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

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

Php pre-defined variable help (with instance ). From php4.1.0, the preferred method for getting external variables is to use the Superglobal variables mentioned below. Prior to this, people were either dependent on register_globals, or long