<?php

$getdatum = $_POST["notdienstdatum"];

mysql_connect("127.0.0.3","db","password");
mysql_select_db("db");

$dbselect = "SELECT apotheke FROM wp_notdienst WHERE datum = '$getdatum'";
$dbquery = mysql_query($dbselect);

$dbcount = mysql_num_rows($dbquery);

$dboutput = mysql_fetch_assoc($dbquery);
echo utf8_encode($dboutput["apotheke"]);

?>

$conn = new mysqli($servername, $username, $password);