php

TLDR

Run PHP script

$ php [script.php]

Execute code

$ php -r 'echo "Hello\n";'

Start built-in server

$ php -S localhost:8000

Interactive mode

$ php -a

Check syntax

$ php -l [script.php]

Show configuration

$ php -i

Show version

$ php -v

php [options] [file] [args]

php is the PHP interpreter. Server-side scripting language.
The tool runs PHP scripts. Web and CLI applications.
php executes PHP code.

FILE

PHP script to run.

-r CODE

Execute code.

-S ADDR:PORT

Built-in server.

-a

Interactive shell.

-l

Syntax check.

-i

Show phpinfo.

-v

Show version.

Configuration via php.ini. Extension availability varies.

PHP was created by Rasmus Lerdorf in 1994 for web development.