Boris is a small but reliable REPL for php

Python, ruby, clojure have REPL. REPL - read-eval-print loop. If you describe what REPL is on pseudo-code, it will look something like this:

while(true){
    echo eval($input->get());
}

Such an implementation allows the developer to experiment with the code as he pleases without creating files. You can make a mistake, Boris will display a message about this, but will continue to work waiting for the new code.

Requirements

• PHP> = 5.3
• The readline functions
• The PCNTL functions
• The posix functions

Installation

Boris is available through composer:

composer require d11wtq/boris dev-master

Or the old fashioned way:

git clone git://github.com/d11wtq/boris.git
cd boris
./bin/boris

Using

When you start Boris, an invitation appears:

boris>

Try to write something, Boris will process it and give the result. If you have a long multi-line expression, Boris will put it together and execute it together. To cancel any operations used ctrl + c. By default, all results are returned by the functionvar_dump

boris> $x = 1;
int(1)
boris> $y = 2;
int(2)
boris> "x + y = " . ($x + $y);
string(9) "x + y = 3"
boris> exit;

To exit the utility is used ctrl + D.

Use in projects

Everything is very simple:

require_once 'lib/autoload.php';
$boris = new \Boris\Boris('myapp> ');
$boris->setLocal(array('appContext' => $appContext));
$boris->start();

Here the utility is initialized with a global variable appContextaccessible from Boris.

It is possible to add callbacks before starting the utility. There are two options for adding them:

$boris->onStart('$foo = 42; $bar = 2; echo "Hello Boris!\n";');
$boris->onStart(function($worker, $scope){
  extract($scope);
  echo '$foo * $bar = ' . ($foo * $bar) . "\n";
  $worker->setLocal('name', 'Chris');
});

First, we pass a line of code that Boris simply executes through eval. Then we execute a callback, which exports data from the scope of Boris, performs some actions with them, and then adds a variable $nameto Boris.

Link to the repository.