How to call a specific method in RestFul API? - php

Question

I have created this code:
header("Content-Type: application/json");
$method = $_SERVER['REQUEST_METHOD'];
$request = explode("/", substr(#$_SERVER['PATH_INFO'], 1));
switch ($method)
{
case 'PUT':
break;
case 'POST':
do_something_with_post($request);
break;
case 'GET':
do_something_with_get($request);
break;
case 'DELETE':
do_something_with_delete($request);
break;
default:
handle_error($request);
break;
}
Now suppose that I execute this command:
curl -X GET http://localhost/api/method/1
so in the switch is fired the GET case, how I can call the function method and pass the parameter 1?
how I should configure the code on the switch? Someone could help me to figure out?

Answer 1

Here's a simplified way to route request paths to classes. This example assumes your base path is /app and you have a sub-folder called /classes. The class name and file name must match for this to work.
Example request:
curl -X POST http://localhost/api/user/123
Example route:
File....: /app/classes/api/User.php
Class...: new User()
Action..: postAction( $arg1 = 123 )
...
// default route
$base = rtrim( str_replace( '\\', '/', __DIR__.'/app' ), '/' );
$area = 'api'; // area (/api, /test, etc.)
$class = 'home'; // class name (Home.php -> new Home(), etc.)
// parse request
$verb = strtolower( #$_SERVER['REQUEST_METHOD'] );
$path = parse_url( #$_SERVER['REQUEST_URI'], PHP_URL_PATH );
$args = explode( '/', trim( $path, '/' ) );
// extract area/class from request path
if( count( $args ) )
{
$area = array_shift( $args );
}
if( count( $args ) )
{
$class = array_shift( $args );
}
// finalize class name and file path
$class = str_replace( ' ', '', ucwords( str_replace( '-', ' ', $class ) ) );
$file = $base .'/classes/'. $area .'/'. $class.'.php';
$output = null;
// load/execute class
if( is_file( $file ) )
{
include_once( $file );
if( class_exists( $class ) )
{
$callable = [ new $class(), $verb.'Action' ];
if( is_callable( $callable ) )
{
$output = call_user_func_array( $callable, $args );
}
}
}
// send response output...
if( is_null( $output ) === false )
{
// ...
}
else
{
// handle error
}
exit;

Answer 2

You'll want to parse the URI:
$pieces = explode('?', $_SERVER['REQUEST_URI']);
$endpoint = $pieces[0];
$endpoint_parts = explode('/', $endpoint);
$api_method = $endpoint_parts[2];
$param = $endpoint_parts[3];
Then you can invoke method from your URL with 1 like this:
$api_method($param);