<?php
//============caranya adalah memakai variable date=============
$bulan_indo = array("","Januari","Februari","Maret","April","Mei","Juni",
"Juli","Agustus","September","Oktober","November",
"Desember");

$bulan_mulai = 3;
$tenor = 10;
$tanggal = "2015-11-10";
$tanggal_val = strtotime($tanggal);
for($i=0;$i<=$tenor;$i++){
    $tanggal_val1=$tanggal_val + (30 * 24 * 60 * 60) ; //biar faham aja
    $id_bulan =date('n',$tanggal_val1);
    $bulan2=$bulan_indo[$id_bulan];
echo $bulan2."<br/>";
}