How to write csv to 1 column?

Question

PHP

I have a CSV file with multiple columns. I need to take data from it in one column and write it to a new csv file. The fputcsv() function takes an array. And how to write only lines?

$fp = fopen('content.csv', 'r');
$newCsv = fopen('new_content.csv', 'w');

while($data = fgetcsv($fp,0,';'))
{
    fputcsv($newCsv, $data[15], ';');
}

Answer 1

fputcsv($newCsv, [$data[15]], ';');