Exporting posts for CSV file download - php

Question

How can I incorporate my loop below to be exported as a CSV?
<?php $answers = new WP_Query(array('cat' => 25, 'order' => 'DESC')); ?>
<table width="100%" border="1" cellspacing="1" cellpadding="1">
<tr>
<td valign="top">Name</td>
<td valign="top">Submission/production title</td>
<td valign="top">Performance space</td>
</tr>
<?php if ($answers->have_posts()) : while ($answers->have_posts()) : $answers->the_post(); ?>
<tr>
<td><?php echo the_title(); ?></td>
<td><?php echo the_field('submit_submission_production_title'); ?></td>
<td><?php echo the_field('submit_performance_space'); ?></td>
</tr>
<?php endwhile; ?>
</table>
<?php endif; ?>
How can I integrate this with fputcsv?
<?php
$list = array (
'aaa,bbb,ccc,dddd',
'123,456,789',
'"aaa","bbb"'
);
$fp = fopen('file.csv', 'w');
foreach ($list as $line) {
fputcsv($fp, split(',', $line), ',', '"');
}
fclose($fp);
?>

Answer 1

First, the_title and the_field* are functions that do echo by themselves, you don't need echo the_title().
* Assuming that this is from Advanced Custom Fields.
Just build an array, like:
$answers = new WP_Query( array('cat' => 25, 'order' => 'DESC') );
if ( $answers->have_posts() ) {
$list = array( 'Name,Submission/production title,Performance space' );
while ( $answers->have_posts() ) {
$title = get_the_title();
$field1 = get_field('submit_submission_production_title');
$field2 = get_field('submit_performance_space');
$list[] = $title . ',' . $field1 . ',' . $field2;
// IF ENCLOSING DOUBLE QUOTES ARE NEEDED
// $list[] = '"' . $title . '","' . $field1 . '","' . $field2 . '"';
}
}