php echo 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

PHP stands for "Hypertext Preprocessor", it is a server scripting language.What Can PHP do? PHP can generate dynamic page content PHP can create, open, read, write, delete, and close files on the server PHP can collect form data

Common PHP variable output: echo, prinf, sprintf, var_dump, 1. use the echo statement Echo can be used to print variables and content. other variables can be system variables, HTML code, or PHP expressions, as shown in the following example:$ A = "1

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

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

Copy Code code as follows: echo "ASD";//String echo "ads$c";//String + variable Echo ' ads$c ';//String asd$c $c not variable echo "SD". " VS "; echo "SD", "vs"; echo $a; echo $a. $b; echo $a, $b; echo $a. $b $c; echo $a, $

PHP function echo () definition and usage analysis. Output one or more strings when using the definition and usage PHP function echo. The description of the echo (strings) parameter is required. One or more strings to be sent to the output. Prompt

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