a PHP REPL in a tweet

REPLinatweet.php

<?php

while(1){echo"> ";$i=rtrim(stream_get_line(STDIN,512,PHP_EOL),';');try{@eval('print_r('.$i.');');}catch(Exception$e){print_r($e);}echo"\n";}

PHP REPL in a tweet

see https://twitter.com/tinydroptest2/status/519371916990484480

Usage

Stand-alone

Just run the script, and a repl will start:

$ php REPLinatweet.php

> $numbers = range(1, 10);
Array
(
    [0] => 1
    [1] => 2
    [2] => 3
    [3] => 4
    [4] => 5
    [5] => 6
    [6] => 7
    [7] => 8
    [8] => 9
    [9] => 10
)

> array_map(function($number) { return $number * $number; }, $numbers);
Array
(
    [0] => 1
    [1] => 4
    [2] => 9
    [3] => 16
    [4] => 25
    [5] => 36
    [6] => 49
    [7] => 64
    [8] => 81
    [9] => 100
)

> exit

With pre-defined context

If you want to run the repl inside some predefined context (to inspect some values, etc...), do it like this:

<?php
// Here's the context you want to inspect
$foo = 'bar';

// Require the REPL where you want to inspect some variables
require 'REPLinatweet.php';

// Here's some more code

• if you run the repl, you can now just type $foo and hit enter to see 'bar'!
• when you're done inspecting and changing variables and functions, type exit to stop the REPL and the script, or type break to stop the REPL but let the code after the REPL execute

isn't that awesome?

Other php awesomeness in a tweet:

• Test Framework in a tweet
• ORM in a tweet
• Package Manager in a tweet
• Dependency Injection Container in a tweet
• Web Framework in a tweet