php.md

Interpreter - PHP

The PHP interpreter can be used within Command, Subscriber and Function types to form the script to be run.

Helper

A helper is made available which can access attributes, commands and functions.

Usage	Notes
$ws['sample.key.name']	ArrayAccess interface for interacting with attributes
$ws('command input here')	__invoke for calling declared commands
$ws->function('arg')	__call for calling declared functions

Examples

Hello world

command('hello'): |
  #!php
  echo "Hello World";
  
>>> ws hello
Hello World

Accessing attributes

attribute('message'): Hello World

command('hello'): |
  #!php
  echo $ws['message'];
  
>>> ws hello
Hello World

Declaring and calling functions

function('greet', [name]): |
  #!php
  = "Hello {$name}.";

command('hello'): |
  #!php
  echo $ws->greet('Guest');

>>> ws hello
Hello Guest

When declaring a function if you wish to return a value use = on the last line of the script followed by an expression.

Running other commands

command('hello'): |
  #!php
  echo "Hello World";

command('say hello'): |
  #!php
  $ws('hello');

>>> ws say hello
Hello World

Running the script from a specific directory

command('get my cwd'): |
  #!php(workspace:/sample/path/here)
  echo getcwd();

>>> mkdir -p sample/path/here
>>> ws get my cwd
/path/to/workspace/sample/path/here

workspace:, harness: and cwd: are the path prefixes available by default.