Home Backend Development PHP Tutorial php命令行用法入门实例教程_php技巧

php命令行用法入门实例教程_php技巧

May 16, 2016 pm 08:34 PM
php Command Line usage

本文实例讲述了php命令行用法,分享给大家供大家参考。具体用法分析如下:

Php是一个非常流行的web服务端脚本语言。其实,php不仅仅可以在web服务器中充当重要角色。在命令行一样可以执行。
 
本文中,笔者为各位介绍下php在命令行中的使用方法。

1、查看php的版本、配置

在命令行中输入php –v 即可查看当前php的版本。

复制代码 代码如下:
PHP 5.2.17(cli) (built: Feb  2 2011 11:19:21) 
Copyright (c) 1997-2010 The PHP Group 
Zend Engine v2.2.0, Copyright (c) 1998-2010 Zend Technologies 
with Zend Optimizer v3.3.9, Copyright (c) 1998-2009, by Zend Technologies 
with eAccelerator v0.9.6.1, Copyright (c) 2004-2010 eAccelerator, by eAccelerator
 
 
其他的选项有: –m、-i。笔者在这里就不给出列子了。
-m 会显示当前php加载的有效模块。
-i 则输出无html格式的phpinfo。
 
使用 –ini 选项可以输出当前php加载ini配置文件的数量、路径信息。
 
如下图所示:

2、在命令行中运行php程序

从命令行运行php非常简单。但有些注意事项需要各位了解下。诸如$_SESSION之类的服务器变量是无法在命令行中使用的,其他代码的运行则和web服务器中完全一样^_^。

复制代码 代码如下:
echo "运行php命令行echo"; 
?>

 
把上面的代码另存为hello.php 。在命令行中敲入 php –f hello.php。显示结果如下图所示:

在命令行中执行php文件的好处之一就是可以通过脚本实现一些计划任务的执行。而毋须通过web服务器^_^。
 
当然,我们也可以直接在php中调试代码:输入php –r 指令,会出现一个”>”符号。这表示已经进入到php的shell中,可以直接写代码,并执行。

复制代码 代码如下:
-bash-3.2$ php -r ' 
> for($i=0;$i > echo "Number: {$i}\n"; 
> } 
> ' 
Number: 0
Number: 1

 
还可以使用php –a 命令打开交互模式,输入一行代码,php会实时输出结果。
 
3、检测php语法、高亮输出

不用执行代码,我们可以在命令行下检测php文件的语法错误。

复制代码 代码如下:
-bash-3.2$ php -l hello.php 
No syntax errors detected in hello.php

 
程序员经常会需要将php代码高亮原样输出,使用php –s 即可

复制代码 代码如下:
-bash-3.2$ php -s hello.php 
<span style="color: #000000">  <br> <span style="color: #0000BB"></span>  <br> <span style="color: #007700">echo </span>  <br> <span style="color: #DD0000">'ddd'</span>  <br> <span style="color: #007700">;<br></span><span></span> style="color: #0000BB">?><br></span>  <br>

 
在浏览器中的显示效果如下所示:

4、查看php手册

从php5.1.2开始,程序员们可以在php命令行下查看手册了,输入php –rf function。会打印出该函数的语法简介

复制代码 代码如下:
-bash-3.2$ php --rf strip_tags 
Function [ function strip_tags ] { 
  
- Parameters [2] { 
Parameter #0 [ $str ] 
Parameter #1 [ $allowable_tags ] 

}

 
如果要查看类使用 –rc;查看扩展使用 –re。
 
Php命令行的使用方法介绍到这里就结束了。希望本文所述对大家的PHP程序设计有所帮助
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

Video Face Swap

Video Face Swap

Swap faces in any video effortlessly with our completely free AI face swap tool!

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)

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

7 PHP Functions I Regret I Didn't Know Before 7 PHP Functions I Regret I Didn't Know Before Nov 13, 2024 am 09:42 AM

If you are an experienced PHP developer, you might have the feeling that you’ve been there and done that already.You have developed a significant number of applications, debugged millions of lines of code, and tweaked a bunch of scripts to achieve op

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

Explain JSON Web Tokens (JWT) and their use case in PHP APIs. Explain JSON Web Tokens (JWT) and their use case in PHP APIs. Apr 05, 2025 am 12:04 AM

JWT is an open standard based on JSON, used to securely transmit information between parties, mainly for identity authentication and information exchange. 1. JWT consists of three parts: Header, Payload and Signature. 2. The working principle of JWT includes three steps: generating JWT, verifying JWT and parsing Payload. 3. When using JWT for authentication in PHP, JWT can be generated and verified, and user role and permission information can be included in advanced usage. 4. Common errors include signature verification failure, token expiration, and payload oversized. Debugging skills include using debugging tools and logging. 5. Performance optimization and best practices include using appropriate signature algorithms, setting validity periods reasonably,

How do you parse and process HTML/XML in PHP? How do you parse and process HTML/XML in PHP? Feb 07, 2025 am 11:57 AM

This tutorial demonstrates how to efficiently process XML documents using PHP. XML (eXtensible Markup Language) is a versatile text-based markup language designed for both human readability and machine parsing. It's commonly used for data storage an

PHP Program to Count Vowels in a String PHP Program to Count Vowels in a String Feb 07, 2025 pm 12:12 PM

A string is a sequence of characters, including letters, numbers, and symbols. This tutorial will learn how to calculate the number of vowels in a given string in PHP using different methods. The vowels in English are a, e, i, o, u, and they can be uppercase or lowercase. What is a vowel? Vowels are alphabetic characters that represent a specific pronunciation. There are five vowels in English, including uppercase and lowercase: a, e, i, o, u Example 1 Input: String = "Tutorialspoint" Output: 6 explain The vowels in the string "Tutorialspoint" are u, o, i, a, o, i. There are 6 yuan in total

Explain late static binding in PHP (static::). Explain late static binding in PHP (static::). Apr 03, 2025 am 12:04 AM

Static binding (static::) implements late static binding (LSB) in PHP, allowing calling classes to be referenced in static contexts rather than defining classes. 1) The parsing process is performed at runtime, 2) Look up the call class in the inheritance relationship, 3) It may bring performance overhead.

What are PHP magic methods (__construct, __destruct, __call, __get, __set, etc.) and provide use cases? What are PHP magic methods (__construct, __destruct, __call, __get, __set, etc.) and provide use cases? Apr 03, 2025 am 12:03 AM

What are the magic methods of PHP? PHP's magic methods include: 1.\_\_construct, used to initialize objects; 2.\_\_destruct, used to clean up resources; 3.\_\_call, handle non-existent method calls; 4.\_\_get, implement dynamic attribute access; 5.\_\_set, implement dynamic attribute settings. These methods are automatically called in certain situations, improving code flexibility and efficiency.

See all articles