ini kenapa gan,

1.mysqli_query() expects at least 2 parameters, 1 given in C:\xampp\htdocs\phpbayar\laporan.php on line 30

2.Warning: mysqli_fetch_array() expects parameter 1 to be mysqli_result, null given in C:\xampp\htdocs\phpbayar\laporan.php on line 54

$q =mysqli_query($con, "SELECT * from kelas,sum(jumlah) FROM pembayaran WHERE tgl_bayar BETWEEN '$tgl1' AND '$tgl2' GROUP BY kelas");

echo '

Rekap Pembayaran '.$tgl1.' sampai '.$tgl2.'

'; echo ' Cetak';

} else { $tgl = date("Y/m/d"); $q =mysqli_query($con, "SELECT * from kelas,sum(jumlah) FROM pembayaran WHERE tgl_bayar='$tgl' GROUP BY kelas"); echo '

Rekap Pembayaran '.$tgl.'

'; }

$sql = mysqli_query($q);

echo '

'; echo '

'; ?>

Mulai

Hingga

Tampilkan

'; echo '#KelasJumlah';

$total = 0; $no=1; while(list($kls,$jml) = mysqli_fetch_array($sql)){ echo ''.$no.''.$kls.''.$jml.''; $total += $jml; $no++; }