Decimal to binary

function dec2bin ($dec) { $flag = array(); while ($dec != 0) { array_push($flag,$dec%2); $dec = (int)($dec/2); } $binstr = ''; while (!empty($flag)) { $binstr .= array_pop($flag); } return $binstr; } echo dec2bin(7);

echo '
'; echo base_convert(7,10,2); echo '
'; echo base_convert(1111,2,8); echo '
'; echo decbin(6);