Php vs Js : Time Format

time.js

var now = new Date(),
    hour, min;

if (this.data.time.format === "24") {
    hour = now.getHours() + "";
    min = now.getMinutes() + "";

    if (hour.length === 1) {
        hour = "0" + hour;
    }
    if (min.length === 1) {
        min = "0" + min;
    }
    this.$container.append(hour + ":" + min + " Uhr <span></span>");
} else {
    hour = now.getHours();
    min = now.getMinutes() + "";
    if (min.length === 1) {
        min = "0" + min;
    }
    if (hour > 11) {
        this.$container.append((hour - 12) + ":" + min + " PM <span></span>");
    } else {
        this.$container.append(hour + ":" + min + " AM <span></span>");
    }
}

time.php

if ($data->config->clock_format == "12") {
     echo date("g:h A");
 } else {
     echo date("G H") + " Uhr";
 }