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csv totals

sulentho asked
Last Modified: 2011-09-20
I have written this script to download data from a mysql table to csv and xls but I have one part where I am kind of confused how to do. Once I get all the results from the table I want the last row of the file to contain the total for the tax_sales and tax_ship columns. I will appreciate any idea that I can get. Thanks


$sql ="SELECT tax_zip AS 'ZIP CODE', tax_state AS 'STATE', tax_county AS 'COUNTY', tax_city AS 'CITY', tax_jcode AS 'JURISDICTION CODE', tax_sales AS 'TAXABLE SALES', tax_ship AS 'TAXABLE S/H',      tax_tottax AS 'TAX RATE APPLIED' FROM taxreport ORDER BY tax_zip ASC";
$result = mysql_unbuffered_query($sql) or die ('CSV-query failed');
$rows = 0;
$csv = '';
while($row = mysql_fetch_assoc($result)) {
  if($rows++ == 0) {
     $csv .= '"'.implode('","', array_keys($row)).'"';
  $csv .= "\r\n".'"'.preg_replace("/[\n\r]/",'', implode('","', $row)).'"';
$filename = $tax_state."_".$tax_smo.$tax_sday.$ax_syr."_".$tax_emo.$tax_eday.$tax_eyr.".csv";

header("Content-type: text/csv");
header("Content-Disposition: attachment; filename=".$filename);
echo $csv;
$sql ="DELETE FROM taxreport";
$result = mysql_query($sql);
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