How to get entire column from database to file? - php

Question

I'm trying to develop a short code that allows me to get the entire data from on column from a table to a .txt file.
$query = $connection->prepare("SELECT * FROM newsletter WHERE status = :status");
$query->execute(array(":status" => "1"));
while ($row = $query->fetch(PDO::FETCH_ASSOC)) {
$file = $_SERVER['DOCUMENT_ROOT']."/assets/files/".$date=date("d-m-Y")."-newsletter.txt";
$openf = fopen($file, "w");
$current = file_get_contents($file);
$current .= "".$row["email"].",";
file_put_contents($file, $current);
fwrite($openf, $current);
fclose($openf);
}
header('Content-Description: File Transfer');
header('Content-Disposition: attachment; filename='.basename($file));
header('Expires: 0');
header('Cache-Control: must-revalidate');
header('Pragma: public');
header('Content-Length: ' . filesize($file));
header("Content-Type: text/plain");
readfile($file);
this is what i have so far, but the main problem is that it only prints 1 line to the .txt file, whether it should print at least 2.
Anyone can help me solve this? I've tried different methods and none worked so far.

Answer 1

create the file before loop and save after loop
$query = $connection->prepare("SELECT * FROM newsletter WHERE status = :status");
$query->execute(array(":status" => "1"));
//create file
$file = $_SERVER['DOCUMENT_ROOT']."/assets/files/".$date=date("d-m-Y")."-newsletter.txt";
$openf = fopen($file, "w");
while ($row = $query->fetch(PDO::FETCH_ASSOC)) {
$current = file_get_contents($file);
$current .= "".$row["email"].",";
file_put_contents($file, $current);
}
//save and close
fwrite($openf, $current);
fclose($openf);
...