php命令行用法简介

Php是一个很是流行的web服务端脚本语言。其实，php不单单能够在web服务器中充当重要角色。在命令行同样能够执行。

 

本文中，笔者为各位介绍下php在命令行中的使用方法。

 

一、  查看php的版本、配置

在命令行中输入php –v 便可查看当前php的版本。

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

 

其余的选项有： –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 选项能够输出当前php加载ini配置文件的数量、路径信息。

 

 

二、  在命令行中运行php程序

从命令行运行php很是简单。但有些注意事项须要各位了解下。诸如$_SESSION之类的服务器变量是没法在命令行中使用的，其余代码的运行则和web服务器中彻底同样^_^。

<?php
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。显示结果以下：

 

在命令行中执行php文件的好处之一就是能够经过脚本实现一些计划任务的执行。而毋须经过web服务器^_^。

 

固然，咱们也能够直接在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，能够直接写代码，并执行。

-bash-3.2$ php -r '
> for($i=0;$i<2;$i++){
> echo "Number: {$i}\n";
> }
> '
Number: 0
Number: 1

 

还可使用php –a 命令打开交互模式，输入一行代码，php会实时输出结果。

 

三、  检测php语法、高亮输出

不用执行代码，咱们能够在命令行下检测php文件的语法错误。

-bash-3.2$ php -l hello.php
No syntax errors detected in hello.php

 

程序员常常会须要将php代码高亮原样输出，使用php –s 便可

-bash-3.2$ php -s hello.php
<code><span style="color: #000000">
<span style="color: #0000BB">&lt;?php<br /></span>
<span style="color: #007700">echo&nbsp;</span>
<span style="color: #DD0000">'ddd'</span>
<span style="color: #007700">;<br /></span><span
style="color: #0000BB">?&gt;<br /></span>
</span>

 

在浏览器中的显示效果

 

四、查看php手册

从php5.1.2开始，程序员们能够在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

-bash-3.2$ php --rf strip_tags
Function [ <internal:standard> function strip_tags ] {

- Parameters [2] {
Parameter #0 [ <required> $str ]
Parameter #1 [ <optional> $allowable_tags ]
}
}

 

若是要查看类使用 –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。Enjoy It！

 

来源：http://www.cnphp.info/php-command-line-useage-intro.html

 

更多：http://www.tutorialspoint.com/unix_commands/php.htm

 

php - Unix, Linux Command

 

NAME

php - PHP Command Line Interface ’CLI’

 

SYNOPSIS

php [options] [ -f ] file [[--] args...]

php [options] -r code [[--] args...]

php [options] [-B code] -R code [-E code] [[--] args...]

php [options] [-B code] -F file [-E code] [[--] args...]

php [options] -- [ args...]

php [options] -a

 

DESCRIPTION

PHP is a widely-used general-purpose scripting language that is especially suited for Web development and can be embedded into HTML. This is the command line interface that enables you to do the following:

You can parse and execute files by using parameter -f followed by the name of the file to be executed.

Using parameter -r you can directly execute PHP code simply as you would do inside a .php file when using theeval() function.

It is also possible to process the standard input line by line using either the parameter -R or -F. In this mode each separate input line causes the code specified by -R or the file specified by -F to be executed. You can access the input line by $argn. While processing the input lines $argi contains the number of the actual line being processed. Further more the parameters -B and -E can be used to execute code (see -r) before and after all input lines have been processed respectively. Notice that the input is read from STDIN and therefore reading from STDIN explicitly changes the next input line or skips input lines.

If none of -r -f -B -R -F or -E is present but a single parameter is given then this parameter is taken as the filename to parse and execute (same as with -f). If no parameter is present then the standard input is read and executed.

 

OPTIONS

Tag Description

--interactive  -a	Run PHP interactively. This lets you enter snippets of PHP code that directly get executed. When readline support is enabled you can edit the lines and also have history support.
--bindpathaddress:port|port -baddress:port|port
	Bind Path for external FASTCGI Server mode (CGI only).
--no-chdir  -C	Do not chdir to the script’s directory (CGI only).
--no-header  -q	Quiet-mode. Suppress HTTP header output (CGI only).
--timing count  -T count	Measure execution time of script repeated count times (CGI only).
--php-inipath|file  -c path|file	Look for php.ini file in the directory path or use the specified file
--no-php-ini  -n	No php.ini file will be used
--definefoo[=bar]  -d foo[=bar]
	Define INI entry foo with value bar
-e	Generate extended information for debugger/profiler
--file file  -f file	Parse and execute file
--global name  -g name	Make variable name global in script.
--help  -h	This help
--hide-args  -H	Hide script name (file) and parameters (args...) from external tools. For example you may want to use this when a php script is started as a daemon and the command line contains sensitive data such as passwords.
--info  -i	PHP information and configuration
--syntax-check  -l	Syntax check only (lint)
--modules  -m	Show compiled in modules
--run code  -r code	Run PHP code without using script tags ’<?..?>’
--process-begin code  -B code
	Run PHP code before processing input lines
--process-codecode  -R code
	Run PHP code for every input line
--process-filefile  -F file
	Parse and execute file for every input line
--process-endcode  -E code	Run PHP code after processing all input lines
--syntax-highlight  -s	Output HTML syntax highlighted source
--version  -v	Version number
--stripped  -w	Output source with stripped comments and whitespace
--zend-extension file  -z file
	Load Zend extension file
args...	Arguments passed to script. Use ’--’ args when first argument starts with ’-’ or script is read from stdin
--rfunction	name
--rf	name Shows information about function name
--rclass	name
--rc	name Shows information about class name
--rextension	name
--re	name Shows information about extension name
--rextinfo	name
--ri	name Shows configuration for extension name
--ini	Show configuration file names

 

FILES

 

Tag Description

php-cli.ini	The configuration file for the CLI version of PHP.
php.ini	The standard configuration file will only be used when php-cli.ini cannot be found.

 

EXAMPLES

 

Tag Description

php -r ’echo "Hello World\n";’
	This command simply writes the text "Hello World" to standard out.
php -r ’print_r(gd_info());’
	This shows the configuration of your gd extension. You can use this to easily check which image formats you can use. If you have any dynamic modules you may want to use the same ini file that php uses when executed from your webserver. There are more extensions which have such a function. For dba use:php -r ’print_r(dba_handlers(1));’
php -R ’echo strip_tags($argn)."\n";’
	This PHP command strips off the HTML tags line by line and outputs the result. To see how it works you can first look at the following PHP command 'php -d html_errors=1 -i' which uses PHP to output HTML formatted configuration information. If you then combine those two 'php ...|php ...' you’ll see what happens.
php -E ’echo "Lines: $argi\n";’
	Using this PHP command you can count the lines being input.
php -R ’@$l+=count(file($argn));’ -E ’echo "Lines:$l\n";’
	In this example PHP expects each input line being a file. It counts all lines of the files specified by each input line and shows the summarized result. You may combine this with tools like find and change the php scriptlet.
php -R ’echo "$argn\n"; fgets(STDIN);’
	Since you have access to STDIN from within -B -R -F and -E you can skip certain input lines with your code. But note that in such cases $argi only counts the lines being processed by php itself. Having read this you will guess what the above program does: skipping every second input line.

 

TIPS

You can use a shebang line to automatically invoke php from scripts. Only the CLI version of PHP will ignore such a first line as shown below:

#!/bin/php

<?php

// your script

?>

 

SEE ALSO

 

http://www.php.net/manual/

 

BUGS

You can view the list of known bugs or report any new bug you found at:

http://bugs.php.net

AUTHORS

The PHP Group: Thies C. Arntzen, Stig Bakken, Andi Gutmans, Rasmus Lerdorf, Sam Ruby, Sascha Schumann, Zeev Suraski, Jim Winstead, Andrei Zmievski.

Additional work for the CLI sapi was done by Edin Kadribasic, Marcus Boerger and Johannes Schlueter.

A List of active developers can be found here:

http://www.php.net/credits.php

And last but not least PHP was developed with the help of a huge amount of contributors all around the world.

VERSION INFORMATION

This manpage describes php, version 5.2.17.

COPYRIGHT

Copyright © 1997-2010 The PHP Group