added trainees endpoint

homepage/participo/api/trainees.php

@@ -0,0 +1,38 @@
+<?php
+require_once("inc/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);