PHP command line command usage guide_php tips

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. 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 with various external libraries to do anything from parsing XML with PDF documents. 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. , 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, strings are in red, etc.

-f reads and interprets the specified file.

-c reads the php.ini file in

-a run interactively

-d foo[=bar] defines the value of the input item foo in ini as bar

-e output additional information for debugging and performance analysis

-z Load Zend expansion 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 html your own php program. Isn’t this very worry-free?

3. Use the odbc function of php to operate the database in shell commands.

Several common commands
1. Check the version and configuration of php

Enter php –v on the command line to view 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 any examples here.

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

-i outputs 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 easy. But there are some precautions that you need to understand. Server variables such as $_SESSION cannot be used in the command line, and other code runs exactly the same as in the web server^_^.

 <&#63;php 
 echo “运行php命令行echo”; 
 &#63;> 

Save the above code as hello.php. Type php –f hello.php at the command line. The results are displayed as follows:

运行php命令行echo

One of the benefits of executing php files on the command line is that you can execute some scheduled tasks through scripts. No need to go through the web server^_^.

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

 -bash-3.2$ php -r ' 
 > for($i=0;$i<2;$i++){ 
 > echo "Number: {$i}\n"; 
 > } 
 > ' 
 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 output the results in real time.

3. Detect PHP syntax and highlight output

Without executing code, we can detect syntax errors in php files from 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"><&#63;php<br /></span> 
 <span style="color: #007700">echo </span> 
 <span style="color: #DD0000">'ddd'</span> 
 <span style="color: #007700">;<br /></span><span 
 style="color: #0000BB">&#63;><br /></span> 
 </span> 

4. View the php manual

Starting from php5.1.2, programmers can view the manual on the php command line and enter php –rf function. A syntax introduction to the function will be printed

 -bash-3.2$ php --rf strip_tags 

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