Home php教程 php手册 PHP脚本的几种标记解析

PHP脚本的几种标记解析

Jun 13, 2016 am 11:07 AM
php introduce about several kinds us yes have mark of short Script parse

我们今天要向大家介绍的是关于1、 PHP脚本有四种标记: 短标签和asp标签虽方便但移植性及发行性较差,通常不推荐。此外注意如果将 PHP 嵌入到 XML 或 XHTML 中则需要使用标准标签 以保持符合标准。

A, 标准标签:

B, 脚本标签:…

C, 短标签: 需要在php.ini中设置short _open_tag=on,默认是on,或者在 PHP 编译时加入了 –enable-short-tags 选项。(PHP 3版本还可以通过 short_tags() 函数激活使用短标记。)

D, asp标签(PHP 3.0.4 版后支持): 需要在php.ini中设置asp_tags=on,默认是off

2, PHP脚本指令分隔符: 同 C,java 或 Perl 一样,PHP 需要在每个语句除末行(因为结束标记隐含表示了一个分号 )后用分号结束指令。而文件末行省略分号有利于使用输出缓冲和 include() 或者 require()

3, PHP脚本注释: PHP 支持 C,C++ 和 Unix Shell 风格(Perl 风格)的注释。例如:

单行注释:// ,#
多行注释:/* */

 

<ol class="dp-xml">
<li class="alt"><span><span class="tag"><span> ?php  </span></span></span></li>
<li><span>echo "This is a test"; // 单行注释 (c++ 风格),  </span></li>
<li class="alt">
<span>/* 多行注释:单行注释说明1:"// </span><span class="tag">?></span><span>"中 </span><span class="tag">?></span><span>有效,  </span>
</li>
<li>
<span>单行注释说明2:"// </span><span class="tag"><span> /script</span><span class="tag">></span><span>"中 </span><span class="tag"><span> /script</span><span class="tag">></span><span>无效 */  </span></span></span>
</li>
<li class="alt"><span>echo "This is yet another test";  </span></li>
<li><span>echo "One Final Test"; # 单行注释 (shell风格)  </span></li>
<li class="alt">
<span class="tag">?></span><span>  </span>
</li>
</ol>
Copy after login


Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn

Hot AI Tools

Undresser.AI Undress

Undresser.AI Undress

AI-powered app for creating realistic nude photos

AI Clothes Remover

AI Clothes Remover

Online AI tool for removing clothes from photos.

Undress AI Tool

Undress AI Tool

Undress images for free

Clothoff.io

Clothoff.io

AI clothes remover

AI Hentai Generator

AI Hentai Generator

Generate AI Hentai for free.

Hot Article

R.E.P.O. Energy Crystals Explained and What They Do (Yellow Crystal)
2 weeks ago By 尊渡假赌尊渡假赌尊渡假赌
Hello Kitty Island Adventure: How To Get Giant Seeds
1 months ago By 尊渡假赌尊渡假赌尊渡假赌
Two Point Museum: All Exhibits And Where To Find Them
1 months ago By 尊渡假赌尊渡假赌尊渡假赌

Hot Tools

Notepad++7.3.1

Notepad++7.3.1

Easy-to-use and free code editor

SublimeText3 Chinese version

SublimeText3 Chinese version

Chinese version, very easy to use

Zend Studio 13.0.1

Zend Studio 13.0.1

Powerful PHP integrated development environment

Dreamweaver CS6

Dreamweaver CS6

Visual web development tools

SublimeText3 Mac version

SublimeText3 Mac version

God-level code editing software (SublimeText3)

CakePHP Project Configuration CakePHP Project Configuration Sep 10, 2024 pm 05:25 PM

In this chapter, we will understand the Environment Variables, General Configuration, Database Configuration and Email Configuration in CakePHP.

PHP 8.4 Installation and Upgrade guide for Ubuntu and Debian PHP 8.4 Installation and Upgrade guide for Ubuntu and Debian Dec 24, 2024 pm 04:42 PM

PHP 8.4 brings several new features, security improvements, and performance improvements with healthy amounts of feature deprecations and removals. This guide explains how to install PHP 8.4 or upgrade to PHP 8.4 on Ubuntu, Debian, or their derivati

CakePHP Date and Time CakePHP Date and Time Sep 10, 2024 pm 05:27 PM

To work with date and time in cakephp4, we are going to make use of the available FrozenTime class.

CakePHP File upload CakePHP File upload Sep 10, 2024 pm 05:27 PM

To work on file upload we are going to use the form helper. Here, is an example for file upload.

CakePHP Routing CakePHP Routing Sep 10, 2024 pm 05:25 PM

In this chapter, we are going to learn the following topics related to routing ?

Discuss CakePHP Discuss CakePHP Sep 10, 2024 pm 05:28 PM

CakePHP is an open-source framework for PHP. It is intended to make developing, deploying and maintaining applications much easier. CakePHP is based on a MVC-like architecture that is both powerful and easy to grasp. Models, Views, and Controllers gu

CakePHP Creating Validators CakePHP Creating Validators Sep 10, 2024 pm 05:26 PM

Validator can be created by adding the following two lines in the controller.

How To Set Up Visual Studio Code (VS Code) for PHP Development How To Set Up Visual Studio Code (VS Code) for PHP Development Dec 20, 2024 am 11:31 AM

Visual Studio Code, also known as VS Code, is a free source code editor — or integrated development environment (IDE) — available for all major operating systems. With a large collection of extensions for many programming languages, VS Code can be c

See all articles