export mysql tables in CVS into a ZIP file - php

Question

I have done a script in PHP to export a MySQL table into a CVS file when clicking a button. It's working fine but now I need to export 1 table per CSV file, all this in a ZIP (or RAR) file when clicking a button.
Basically it should be:
Export table:
mytable.csv
Export all tables:
export.ZIP containing:
--mytable1.csv
--mytable2.csv
--mytable3.csv
I could loop the export function for each table but that will not put everyting into the ZIP:
/* EXPORT ALL TABLES */
if (isset($_POST['export_all_tables'])){
$Qlist_table = $pdo->prepare('SHOW TABLES');
$Qlist_table->execute(array(''));
foreach ($Qlist_table as $Alist_table)
export_table($Alist_table[0]);
}
function export_table($table_to_export){
$Qselect = $pdo->prepare('SELECT * FROM '.$table_to_export.'');
$Qselect->execute(array(''));
$results = $Qselect->fetchAll(PDO::FETCH_ASSOC);
...
...
...
header("Content-disposition: attachment; filename=".$fileName);
header("Content-Type: application/force-download");
header("Content-Transfer-Encoding: application/vnd.ms-excel\n");
header("Pragma: no-cache");
header("Cache-Control: must-revalidate, post-check=0, pre-check=0, public");
header("Expires: 0");
echo $outputCsv;
exit();
}
I don't think you need all the code of the export function, if yes let me know.
Thanks!

Answer 1

Actually I found the solution thanks to addFile(). Here is the code:
if (isset($_POST['export_all_tables'])){
// Name of the file to export
$date = date('Y_m_j_H\hi');
$fileName = 'Export_all_'.$date.'.zip';
// Headers to create the ZIP file
header("Content-disposition: attachment; filename=".$fileName);
header("Content-Type: application/force-download");
header("Content-Transfer-Encoding: application/zip;\n");
header("Pragma: no-cache");
header("Cache-Control: must-revalidate, post-check=0, pre-check=0, public");
header("Expires: 0");
// We create the ZIP file
$zip = new ZipArchive;
$result_zip = $zip->open($fileName, ZipArchive::CREATE); // We open the file
if ($result_zip === TRUE) {
$Qlist_table = $pdo->prepare('SHOW TABLES');
$Qlist_table->execute(array(''));
// For each table
foreach ($Qlist_table as $Alist_table) {
$content = export_table($Alist_table[0]);
$fileName = $Alist_table[0].'_'.$date.'.csv';
$zip->addFile($fileName, $fileName); // We add the CSV file from the server
}
$zip->close();
}
else {
echo 'Failed, code:' . $result_zip;
}
readfile("Export_all.zip"); // To download the ZIP file
exit();
}
and the exporttable function ends like that to write the file on the server:
$fh = fopen($fileName, 'w') or die("Can't open file");
$stringData = $outputCsv; // outputCsv is the content of the table
fwrite($fh, $stringData);
fclose($fh);