Autoload Interactive PHP Shell

.bashrc

alias iphp="php -d auto_prepend_file=~/.phpinitscript.php -a"

.phpinitscript.php

<?php
/**
 * This file lives in my home directory.
 */

$projects_root = "/home/noah/projects";
$dircount = count(explode('/', $projects_root));

$curpath = trim(`pwd`);

if (false === strpos($projects_root, $curpath)) {
    die('Not in a project directory.');
}

$dirs = explode('/', $curpath);
// /home/noah/projects/<project>
$project = $dirs[$dircount];
$proj_root = implode('/', array_slice($dirs,0,$dircount+1));

switch ($project) {
    case 'eminutes':
        $bootstrap_file = '/inc/bootstrap.php';
        break;

    case 'sketchup':
        $bootstrap_file = '/lib/app.php';
        break;

    default:
        die('Unknown project ' . $project);
        break;
}

$err = fopen('php://stderr','w');
fwrite($err, "Loaded bootstrap file '$proj_root$bootstrap_file'.\n");
fclose($err);
require_once $proj_root . $bootstrap_file;