PHP command line command basics

This article mainly introduces the basic knowledge of PHP command line commands. Interested friends can refer to it. I hope it will be helpful to everyone.

When the user opens the php page, the server executes the PHP command and sends the execution results to the user's browser. This is similar to ASP and CoildFusion. PHP can run on WINDOWS and multiple versions of UNIX. superior. In addition to being able to manipulate your pages, PHP can also send HTTP headers.

You can set cookies, manage digital signatures and redirect users, and it provides excellent connectivity to other databases (also ODBC), integrating various external libraries to parse XML with PDF documents anything. Then did you know that you can use the powerful functions of php to do other things? When running in independent cgi mode, a php executable program is required. It has many command line parameters, some of which can be used for fun purposes. The following are all php command line parameters, where [] indicates that they are optional. Yes, the table is a must.

Usage php [-q] [-h] [-s] [-v] [-i] [-f ] | { [args...]} -q Quiet mode. Do not output HTTP headers.
-s Convert php program files to HTML in color format (for example, reserved words are in green, functions and variables are in blue, comments are in yellow and strings are in red, etc.

-f Read and interpret the specified file.

-c Read the php.ini file in

-a Run interactively

-d foo[=bar] Define ini The value of the input item foo in is bar

-e Output additional information for debugging and performance analysis

-z Load Zend extension file

-i PHP related information

-h help itself.

1. Use php -q filename.php to use the php program as a shell program,

2. Use -s to The PHP program is htmlized. Isn’t this very worry-free?

3. Use the odbc function of PHP to operate the database in the shell command.

A few Commonly used commands
1. Check the version and configuration of php

Enter php -v on the command line to check the current php version.

 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

Other options are: –m, -i. The author will not give examples here.

-m will display the valid modules currently loaded by php.

-i will output phpinfo without html format.

Use the –ini option to output the number and path information of the ini configuration files currently loaded by php.

php--ini-in-shell

2. Run the php program in the command line

Running php from the command line is very simple. But there are some precautions that you need to understand. Server variables such as $_SESSION cannot be used in the command line, and other codes run exactly the same as in the web server^ _^.

 <?php 
 echo “运行php命令行echo”; 
 ?>

Save the above code as hello.php. Type php –f hello.php in the command line. The result is displayed as follows:

运行php命令行echo

Execute php in the command line One of the benefits of files is that you can execute some scheduled tasks through scripts. Instead of going through the web server^_^.

Of course, we can also debug the code directly in php: enter the php -r command, and it will A ">" symbol appears. This means that you have entered the php shell, and you can write code directly and execute it.

 -bash-3.2$ php -r ' 
 > for($i=0;$i<2;$i++){ 
 > echo "Number: {$i}\n"; 
 > } 
 > &#39; 
 Number: 0 
 Number: 1

You can also use the php -a command to open the interactive mode, enter a line of code, and php will Real-time output results.

3. Detect PHP syntax and highlight output

Without executing code, we can detect syntax errors in PHP files on the command line .

 -bash-3.2$ php -l hello.php

No syntax errors detected in hello.php

Programmers often need to highlight the php code and output it as is, use php –s

 -bash-3.2$ php -s hello.php

 <code><span style="color: #000000"> 
 <span style="color: #0000BB"><?php<br /></span> 
 <span style="color: #007700">echo </span> 
 <span style="color: #DD0000">&#39;ddd&#39;</span> 
 <span style="color: #007700">;<br /></span><span 
 style="color: #0000BB">?><br /></span> 
 </span>

4. View the php manual

Starting from php5.1.2, programmers can view the manual under the php command line, enter php –rf function. The syntax introduction of the function will be printed out

 -bash-3.2$ php --rf strip_tags

  Function [ <internal:standard> function strip_tags ] { 
    
  - Parameters [2] { 
  Parameter #0 [ <required> $str ] 
  Parameter #1 [ <optional> $allowable_tags ] 
  } 
  }

Summary: The above is the entire content of this article, I hope it will be helpful to everyone's learning.

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