cwsvJudo/homepage/participo/api/trainees.php

<?php
require_once "bootstrap.php";

require_once "participoLib/apiKey.php";

function get()
{
    $wkSqlQuery =
        "SELECT DISTINCT" .
        "  `wkParticipo_Users`.* " .
        " FROM `wkParticipo_Users`" .
        " JOIN `wkParticipo_user<=>userAttributes`" .
        "   ON `wkParticipo_user<=>userAttributes`.`userId` = `wkParticipo_Users`.`id`" .
        " WHERE `wkParticipo_user<=>userAttributes`.`attributeId` = 4" .
        " ORDER BY `wkParticipo_Users`.`id` ASC;";

    $wkSqlResponse = dbConnector::query($wkSqlQuery);

    // Postprocessing
    // - convert the comma separated list into an array
    foreach ($wkSqlResponse as &$user) {
        $user["eMail"] = explode(",", $user["eMail"]);
        foreach ($user["eMail"] as &$email) {
            $email = trim($email);
        }
    }
    return $wkSqlResponse;
}

authorize();
$wkSqlResponse = get();

// Sending Response
// - setting header
header("Content-Type: application/json");
// - sending body payload
echo json_encode($wkSqlResponse);