Online PHP editor | refs for 08mJ2

<?php if(isset($_POST['button'])) { $newDate = date("Y-m-d", strtotime($_POST['inputdate'])); $expDate = strtotime('+7 days', $newDate); $q=mysql_query("Insert into barang_masuk (`tgl`,`kode_barang`,`jumlah`) values ('".$newDate."','".$_POST['kodebarang']."','".$_POST['qty']."')") or die(mysql_error()); $q2=mysql_query("Select * from data_persediaan where kode_barang='".$_POST['kodebarang']."'"); $rc=mysql_num_rows($q2); if($rc==1) { $q3=mysql_query("Update data_persediaan SET masuk=masuk + ".$_POST['qty'].",stok_tersedia=stok_tersedia + ".$_POST['qty']." Where kode_barang='".$_POST['kodebarang']."'"); if($q3) { echo "Data sudah disimpan"; } }else{ $q4=mysql_query("Insert into data_persediaan (`kode_barang`,`stok_awal`,`masuk`,`stok_tersedia`) values ('".$_POST['kodebarang']."','".$_POST['qty']."','".$_POST['qty']."','".$_POST['qty']."')"); if($q4) { echo "Data sudah disimpan"; } } } ?>