How to print values of array on every line to text file in php?

Question

I have an array $customers, and want to print each value of the array to a text file. Array looks like this:

[0] = Sam, John, Rick
[1] = Jacob, Richard, David
[2] = Jesse, Frank, Louise

This is what I had in mind, but it doesn't seem to like implode:

$pos = 0;
    foreach ($customers as $customer)
    {
      $result = implode(" ",$customers[$pos]);
      //echo implode(" ",$customers[$pos]);
      file_put_contents('active.txt', $result);
      $pos = $pos + 1;
    }

The result I would expect in the text file is:

Sam, John, Rick
Jacob, Richard, David
Jesse, Frank, Louise

Can anyone explain how to do this? The goal is to have the array to appear comma delimited in a text file to export to Excel.

Check php.net/manual/en/function.fputcsv.php for creating a CSV file format — user1165759
– user1165759, Commented Apr 27, 2020 at 16:27
Why do you implode with space if it's comma you want. Not that it made any difference this time — Andreas
– Andreas, Commented Apr 27, 2020 at 16:45
Does your question have anything to do with what you asked in this one you asked? — Funk Forty Niner
– Funk Forty Niner, Commented Apr 27, 2020 at 16:48
file_put_contents() overwrites file contents if the FILE_APPEND flag is not set. You end up with only the last line in your file. Also I suggest not to use file_put_contents() in a loop because it opens and closes the file every time. This is a lot of I/O operations which take a lot of (unnecessary) time. — miile7
– miile7, Commented Apr 28, 2020 at 8:01

Nigel Ren · Accepted Answer · 2020-04-27 16:32:29Z

2

Each element of $customers is a single value, so rather than using a loop and imploding the strings, which also overwrite each other in the file.

You can just implode() the whole array with PHP_EOL for the line separator...

file_put_contents('active.txt', implode(PHP_EOL ,$customers));

answered Apr 27, 2020 at 16:32

Nigel Ren

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