PHP Export data to CSV file

PHP Tutorial Export data to CSV file
Include (". /admin/inc/inc.php ");
$times = time ();
$filename = $times. " CSV ";
$a = "contact person, telephone number, community, required materials, notes, application time n";
$days = Postget ("Days");
$mktime = Daystomktime ($days);
$sql = "SELECT * from Tugou where ($times-times) < $mktime";
$db = new db ();
$result = $db->query ($sql);
$rs = $db->fetch ($result, 0);
foreach ($rs as $v => $vv)
{
$a. = $vv [' name ']. $VV [' Mo ']. $VV [' Comm '].

Commbox ($vv [' Cbox ']). ",";
$a. = "". $vv [' Bak ']. Date (' y-m-d ', $vv [' Times ']). "RN

";
}
echo $a;
$hod = fopen ($filename, "w+");
if (fwrite ($hod, $a))
{
echo "Generated the file successfully, click <a href= $filename target=_blank> download Excel

Document </a> ";
}

function Daystomktime ($days)
{
Switch ($days)
{
Case 1:
$t = 86400;
Break;
Case 7:
$t = 86400*7;
Break;
Case 30:
$t = 86400*30;
Break;
Case 90:
$t = 86400*90;
Break;
Case 2048:
$t = 86400*2048;
Break;
}
return $t;
}

Function Commbox ($ars)
 {
  if (trim ($ars) = = ")
  {
   return ' &nbsp; ';
 }
 
  $array = include ("tugou.php");
  $tmp = explode (', ', $ars);
  $str = ';
  if ($tmp)
  {
   foreach ($tmp as $c)
   {
   $str. = $array [Intval ($c)]. ' |
  }
 }
  return $str;
 }
 
/*
  struct
 create table if not exists ' Tugou ' (
  ' id ' int (8) is not NULL auto_increment,
  ' name ' varchar () default NULL comment ' names ',
  ' mo ' varchar () default NULL comment ' mobile ',
  ' Comm ' varchar default NULL,
  ' bak ' varchar (+) default NULL comment ' backup ',
  ' cbox ' varchar (500) Default NULL comment ' type ',
  ' Times ' int (4) default NULL,
  ' IP ' varchar default NULL,
  Primary key  (' id ')
) ENGINE=INNODB&NBSp; Default Charset=utf8 auto_increment=8;