当前位置：网站首页>"PHP Basics" PHP statements and statement blocks

"PHP Basics" PHP statements and statement blocks

2022-07-27 08:06:00 【Go home at night】

Functional requirements

stay PHP Used in program “{” and “}” take PHP Statements are contained in a statement block

The sample code 

<!doctype html>

<html>

<head>

<meta charset="utf-8">

<title>PHP Use of statement blocks </title>

</head>



<body>

<?php

    {

      echo 'Hello World!';

      echo '<br />';

      echo 'Hi, PHP';

    }

?>

</body>

Running results

 

 

The code analysis

{

  echo 'Hello World!';

  echo '<br />';

  echo 'Hi, PHP';

}： from “{” and “}” A statement enclosed is a statement block , As a whole . This statement block contains three echo sentence , Output string respectively “Hello World！”、 character string “<br />” Represents line breaks and strings “Hi, PHP”

Knowledge description

PHP The program consists of one or more PHP Sentence structure , Each sentence is marked with a semicolon “;” end . Writing PHP Code , One PHP Statements usually occupy one line .

If more than one PHP There is some connection between sentences , have access to “{” and “}” Will these PHP Statements are included to form a statement block .

Be careful ： Statement blocks are generally not used alone . Only and conditional judgment statements 、 Loop statement 、 Functions, etc , Statement blocks are meaningful only when they represent a whole .

原网站

版权声明
本文为[Go home at night]所创，转载请带上原文链接，感谢
https://yzsam.com/2022/208/202207270502441244.html

边栏推荐

猜你喜欢

随机推荐