Minimal micro REST API PHP

.htaccess

RewriteEngine On
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule ^(.*)$ index.php [QSA,L]

data.json

[
  {
    "id" : "18741DB9-B869-B378-8624-0B9F593F84BA",
    "name" : "Ross",
    "email" : "lobortis@arcuetpede.ca",
    "about" : "nisl. Quisque fringilla euismod enim.",
    "title" : "Mr."
  },
  {
    "id" : "E2D7A39E-4583-A27A-BC55-98489F062FB1",
    "name" : "Bruno",
    "email" : "egestas.nunc@eratvitaerisus.edu",
    "about" : "Donec tincidunt. Donec vitae erat",
    "title" : "Ms."
  },
  {
    "id" : "26CC1826-2BBA-5ABB-CB7E-D06AD96D1A23",
    "name" : "Audra",
    "email" : "tincidunt.vehicula.risus@tempus.com",
    "about" : "Nullam suscipit, est ac facilisis",
    "title" : "Mr."
  },
  {
    "id" : "4F0FCC7A-A715-4AC2-B64F-830AA3441995",
    "name" : "Kelsey",
    "email" : "sodales.at@quis.net",
    "about" : "mi felis, adipiscing fringilla, porttitor",
    "title" : "Mr."
  },
  {
    "id" : "8A3A6AF5-225D-D812-ABB0-3668D27F677F",
    "name" : "Blaine",
    "email" : "suscipit.est.ac@aclibero.ca",
    "about" : "lorem eu metus. In lorem.",
    "title" : "Mr."
  },
  {
    "id" : "8B7A6266-5CDD-AF5A-6C15-ECF6273A26FB",
    "name" : "Brielle",
    "email" : "Morbi.metus@nislQuisque.net",
    "about" : "ullamcorper eu, euismod ac, fermentum",
    "title" : "Dr."
  },
  {
    "id" : "3C1D2DF8-CB72-EF58-2B7D-DD266E54710A",
    "name" : "Susan",
    "email" : "rutrum@aliquet.org",
    "about" : "mattis. Cras eget nisi dictum",
    "title" : "Mrs."
  },
  {
    "id" : "1F391F0E-DE13-5089-7A92-8BA9B1264245",
    "name" : "Brent",
    "email" : "nibh.dolor@magna.edu",
    "about" : "fringilla. Donec feugiat metus sit",
    "title" : ""
  },
  {
    "id" : "340DCB7E-428E-EA04-E394-513893AE2E56",
    "name" : "Cally",
    "email" : "Cras.lorem@eunullaat.net",
    "about" : "nunc. In at pede. Cras",
    "title" : ""
  },
  {
    "id" : "E2D7A39E-4583-A27A-BC55-98489F062FB1",
    "name" : "Bruno",
    "email" : "egestas.nunc@eratvitaerisus.edu",
    "about" : "Donec tincidunt. Donec vitae erat",
    "title" : "Ms."
  },
  {
    "id" : "26CC1826-2BBA-5ABB-CB7E-D06AD96D1A23",
    "name" : "Audra",
    "email" : "tincidunt.vehicula.risus@tempus.com",
    "about" : "Nullam suscipit, est ac facilisis",
    "title" : "Mr."
  },
  {
    "id" : "4F0FCC7A-A715-4AC2-B64F-830AA3441995",
    "name" : "Kelsey",
    "email" : "sodales.at@quis.net",
    "about" : "mi felis, adipiscing fringilla, porttitor",
    "title" : "Mr."
  },
  {
    "id" : "8A3A6AF5-225D-D812-ABB0-3668D27F677F",
    "name" : "Blaine",
    "email" : "suscipit.est.ac@aclibero.ca",
    "about" : "lorem eu metus. In lorem.",
    "title" : "Mr."
  },
  {
    "id" : "8B7A6266-5CDD-AF5A-6C15-ECF6273A26FB",
    "name" : "Brielle",
    "email" : "Morbi.metus@nislQuisque.net",
    "about" : "ullamcorper eu, euismod ac, fermentum",
    "title" : "Dr."
  },
  {
    "id" : "3C1D2DF8-CB72-EF58-2B7D-DD266E54710A",
    "name" : "Susan",
    "email" : "rutrum@aliquet.org",
    "about" : "mattis. Cras eget nisi dictum",
    "title" : "Mrs."
  },
  {
    "id" : "1F391F0E-DE13-5089-7A92-8BA9B1264245",
    "name" : "Brent",
    "email" : "nibh.dolor@magna.edu",
    "about" : "fringilla. Donec feugiat metus sit",
    "title" : ""
  },
  {
    "id" : "340DCB7E-428E-EA04-E394-513893AE2E56",
    "name" : "Cally",
    "email" : "Cras.lorem@eunullaat.net",
    "about" : "nunc. In at pede. Cras",
    "title" : ""
  },
  {
    "id" : "E2D7A39E-4583-A27A-BC55-98489F062FB1",
    "name" : "Bruno",
    "email" : "egestas.nunc@eratvitaerisus.edu",
    "about" : "Donec tincidunt. Donec vitae erat",
    "title" : "Ms."
  },
  {
    "id" : "26CC1826-2BBA-5ABB-CB7E-D06AD96D1A23",
    "name" : "Audra",
    "email" : "tincidunt.vehicula.risus@tempus.com",
    "about" : "Nullam suscipit, est ac facilisis",
    "title" : "Mr."
  },
  {
    "id" : "4F0FCC7A-A715-4AC2-B64F-830AA3441995",
    "name" : "Kelsey",
    "email" : "sodales.at@quis.net",
    "about" : "mi felis, adipiscing fringilla, porttitor",
    "title" : "Mr."
  },
  {
    "id" : "8A3A6AF5-225D-D812-ABB0-3668D27F677F",
    "name" : "Blaine",
    "email" : "suscipit.est.ac@aclibero.ca",
    "about" : "lorem eu metus. In lorem.",
    "title" : "Mr."
  },
  {
    "id" : "8B7A6266-5CDD-AF5A-6C15-ECF6273A26FB",
    "name" : "Brielle",
    "email" : "Morbi.metus@nislQuisque.net",
    "about" : "ullamcorper eu, euismod ac, fermentum",
    "title" : "Dr."
  },
  {
    "id" : "3C1D2DF8-CB72-EF58-2B7D-DD266E54710A",
    "name" : "Susan",
    "email" : "rutrum@aliquet.org",
    "about" : "mattis. Cras eget nisi dictum",
    "title" : "Mrs."
  },
  {
    "id" : "1F391F0E-DE13-5089-7A92-8BA9B1264245",
    "name" : "Brent",
    "email" : "nibh.dolor@magna.edu",
    "about" : "fringilla. Donec feugiat metus sit",
    "title" : ""
  },
  {
    "id" : "340DCB7E-428E-EA04-E394-513893AE2E56",
    "name" : "Cally",
    "email" : "Cras.lorem@eunullaat.net",
    "about" : "nunc. In at pede. Cras",
    "title" : ""
  },
  {
    "id" : "C061F9A3-EC77-6B24-E0A4-218134EA240E",
    "name" : "Edan",
    "email" : "vel.mauris@sed.ca",
    "about" : "sit amet orci. Ut sagittis",
    "title" : "Ms."
  }
]

index.php

<?php

ini_set('display_errors', 1);

error_reporting(E_ALL | E_STRICT);

require_once 'RegexRouter.php';

$router = new RegexRouter();

/**
 * Routes
 * API - Rest
 */

$router->route('/^\/javascript\/underscore\/api\/(\w+)\/(\d+)\/?$/', function($category, $id){
    header('Content-Type: application/json');
    $data = file_get_contents("{$category}.json");
    if ($id == 0) {
	    echo $data;
    } else {
	    $json = json_decode($data);
	    echo json_encode($json[$id-1]);
    }
 });

$router->execute($_SERVER['REQUEST_URI']);

RegexRouter.php

<?php

class RegexRouter {
    
    private $routes = array();
    
    public function route($pattern, $callback) {
        $this->routes[$pattern] = $callback;
    }
    
    public function execute($uri) {
        foreach ($this->routes as $pattern => $callback) {
            if (preg_match($pattern, $uri, $params) === 1) {
                array_shift($params);
                return call_user_func_array($callback, array_values($params));
            }
        }
    }
    
}