Generate CSV with fixed header with data from foreach - php

Question

I would like to generate a CSV file with fixed header (name, email, cod) from data which is coming from a foreach loop. Here is what I tried, but it's not working yet:
$parcels = array();
$parcels = array('name','email', 'cod');
foreach ($orders as $order_id) {
$order_info = $this->model_sale_order->getOrder($order_id);
$parcels[] = $order_info['shipping_firstname'] . ' ' . $order_info['shipping_lastname'],
$parcels[] = $order_info['email'],
//if empty write null, else write value
$parcels[] = empty($this->request->post['cod'][$order_id]) ? '' : $this->request->post['cod'][$order_id],
}
$fp = fopen('php://output', 'wb');
foreach ( $parcels as $line ) {
$val = explode(",", $line);
fputcsv($fp, $val);
}
fclose($fp);

Answer 1

Because $line doesn't contain a "line", but a "cell".
You need a multidimensionnal array, if you want to store all data in memory before to write the file.
You could store in an array in your loop, and add it in $parcels.
$parcels = [['name','email', 'cod']]; // first line
foreach ($orders as $order_id) {
$order_info = $this->model_sale_order->getOrder($order_id);
$line = [];
$line[] = $order_info['shipping_firstname'] . ' ' . $order_info['shipping_lastname'];
$line[] = $order_info['email'];
//if empty write null, else write value
$line[] = empty($this->request->post['cod'][$order_id]) ? '' : $this->request->post['cod'][$order_id];
$parcels[] = $line; // add the line into `$parcels`
}
foreach ( $parcels as $line ) {
// no need to explode here
fputcsv($fp, $val);
}
NB: Caution, you have some , at the end of somes lines, which must be ;.
You could also do it in one loop :
$fp = fopen('php://output', 'wb');
fputcsv($fp, ['name','email', 'cod']);
foreach ($orders as $order_id)
{
$order_info = $this->model_sale_order->getOrder($order_id);
$line = [];
$line[] = $order_info['shipping_firstname'] . ' ' . $order_info['shipping_lastname'];
$line[] = $order_info['email'];
//if empty write null, else write value
$line[] = empty($this->request->post['cod'][$order_id]) ? '' : $this->request->post['cod'][$order_id];
fputcsv($fp, $line);
}
fclose($fp);
See working example