PHP REST API template with JSON response (single file | Usage: see x-README.md)

rest-api-template.php

<?php

//Uncomment to show errors
//ini_set('display_errors', 1); ini_set('display_startup_errors', 1); error_reporting(E_ALL);

$response = array();
$method = $_SERVER['REQUEST_METHOD'];

header('Content-Type: application/json');


switch ($method) {
    case 'GET':
        invalid_method();   
        break;
    case 'POST':
        invalid_method();
        break;
    case 'PUT':
        invalid_method();
        break;
    case 'PATCH':
        invalid_method();
        break;
    case 'DELETE':
        invalid_method();
        break;
    case 'COPY':
        invalid_method();
        break;
    case 'HEAD':
        invalid_method();
        break;
    case 'OPTIONS':
        invalid_method();
        break;
    case 'LINK':
        invalid_method();
        break;
    case 'UNLINK':
        invalid_method();
        break;
    case 'PURGE':
        invalid_method();
        break;
    case 'LOCK':
        invalid_method();
        break;
    case 'UNLOCK':
        invalid_method();
        break;
    case 'PROPFIND':
        invalid_method();
        break;
    case 'VIEW':
        invalid_method();
        break;
    default:
        invalid_method();
        break;
}

echo(json_encode($response)); //Send response as JSON

function response_add($key, $value) {
    global $response;
    array_push($response, array($key => $value));
}

function invalid_method() {
    global $method;
    response_add("error", "Invalid method! (" . $method . ")");
    http_response_code(405); //Send status code 405 (Method Not Allowed)
}

?>

x-README.md

Usage

Use response_add("key", "value"); to add a key and a value to the JSON response.