Home > Article > Backend Development > Introduction to php command line mode
php full set line mode, namely php-cli, is called in official documents: CLI SAPI (Server Application Programming Interface, server application programming port). It sounds complicated. In fact, this name is derived from the fact that php was originally a server-side scripting language.
Differences from server mode
The server mode mainly has two working modes: as a web server mode or as a cgi executable program. The former, For example, as a module in apach (such as: php5apache2.dll); the latter as an executable program, such as php-cig. The current replacement is php-fpm (FastCGI Process Manager).
Look at php -fpm configuration. On the server, put a script file with content:
<?php phpinfo(); ?>
Output:
... Server API FPM/FastCGI Virtual Directory Support disabled Configuration File (php.ini) Path /etc/php7 Loaded Configuration File /etc/php7/php.ini Scan this dir for additional .ini files /etc/php7/conf.d ...
Description The configuration file is /etc/php7/conf.d
of /etc/php7/php.iniLook at the cli mode configuration file again. Run
php -r "phpinfo();"
-r, which means run to run the complete set. The output is:
... Server API => Command Line Interface Virtual Directory Support => disabled Configuration File (php.ini) Path => /etc/php/7.0/cli Loaded Configuration File => /etc/php/7.0/cli/php.ini Scan this dir for additional .ini files => /etc/php/7.0/cli/conf.d Additional .ini files parsed => /etc/php/7.0/cli/conf.d/10-opcache.ini, ...
The configuration file path is: /etc/php/7.0/ cli/php.ini and php-fpm are different.
I often hear people say that PHP can only be used as a temporary server script and cannot be used for long-term work, and that security configuration will affect the command line, etc. This is obviously wrong.
Other differences
cli mode defines three constants STDIN, STDOUT, and STDERR; such as: $stderr = fopen('php://stderr', ' w');
CLI SAPI will not change the current directory to the directory where the run script is located.
php as a shell script
has There are two methods to use the php script as a shell script, such as script:
hello.php
<?php echo "hello world!"; var_dump($argv); ?>
Method 1, php script parameter
~php hello.php -s 'me' hello world array(3) { [0]=> string(9) "hello.php" [1]=> string(2) "-s" [2]=> string(2) "me" }
Method 2, add
to the php file header#!/usr/bin/php
Then chmod u .php.cn/course/list/29/type/2.html
The above is the detailed content of Introduction to php command line mode. For more information, please follow other related articles on the PHP Chinese website!