paad/action/action_profesor.php

<?
#input $_GET['id_espacio_sgu']
#output rutas: [ ...ruta, salones: [{...salon}] ]
header('Content-Type: application/json charset=utf-8');
ini_set('display_errors', 1);
ini_set('display_startup_errors', 1);
error_reporting(E_ALL);

$ruta = "../";
require_once $ruta . "class/c_login.php";
if (!isset($_SESSION['user'])) {
    http_response_code(401);
    die(json_encode(['error' => 'unauthorized']));
}
$user = unserialize($_SESSION['user']);

// check method
try {
    if ($_SERVER['REQUEST_METHOD'] === 'GET') {
        $data = $db->query(
            "SELECT DISTINCT profesor.*
            FROM profesor
            JOIN horario_profesor   using (profesor_id)
            JOIN horario            using (horario_id)
            JOIN materia            using (materia_id)
            JOIN carrera            using (carrera_id)
            WHERE carrera.facultad_id = :facultad_id OR :facultad_id IS NULL
            ORDER BY profesor.profesor_nombre",
            array(
                ":facultad_id" => $user->facultad['facultad_id']
            )
        );

        $last_query = [
            'query' => $db->getLastQuery(),
        ];

        echo json_encode($data, JSON_UNESCAPED_UNICODE | JSON_PRETTY_PRINT);
    } else {
        http_response_code(405);
        echo json_encode(['error' => 'method not allowed']);
        exit;
    }
} catch (PDOException $th) {
    http_response_code(500);
    echo json_encode([
        'error' => $th->getMessage(),
        'query' => $db->getLastQuery(),
    ], JSON_UNESCAPED_UNICODE | JSON_PRETTY_PRINT | JSON_UNESCAPED_SLASHES | JSON_PARTIAL_OUTPUT_ON_ERROR);
    exit;
} catch (Exception $th) {
    http_response_code(500);
    echo json_encode([
        'error' => $th->getMessage(),
    ], JSON_UNESCAPED_UNICODE | JSON_PRETTY_PRINT);
    exit;
}