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15 years ago
In general I found myself wanting to get the result as a string rather than writing it to a file, and in particular I wanted to produce a CSV using an EOL that might not be the same as that on the server where I generated it.  This is how I solved the problem without rewriting  fputcsv.

<?php
function sputcsv($row, $delimiter = ',', $enclosure = '"', $eol = "\n")
{
    static $fp = false;
    if ($fp === false)
    {
        $fp = fopen('php://temp', 'r+'); // see http://php.net/manual/en/wrappers.php.php - yes there are 2 '.php's on the end.
        // NB: anything you read/write to/from 'php://temp' is specific to this filehandle
    }
    else
    {
        rewind($fp);
    }
    
    if (fputcsv($fp, $row, $delimiter, $enclosure) === false)
    {
        return false;
    }
    
    rewind($fp);
    $csv = fgets($fp);
    
    if ($eol != PHP_EOL)
    {
        $csv = substr($csv, 0, (0 - strlen(PHP_EOL))) . $eol;
    }
    
    return $csv;
}

// test
$rows = array
(
    array('blue, sky', 'green, lime', 'red', 'black'),
    array('white', 'gold', 'purple, imperial', 'grey, slate'),
    array('orange, burnt', 'pink, hot', 'violet', 'indigo'),
);

if (PHP_EOL == "\r\n")
{
    $eol = "\n";
}
else
{
    $eol = "\r\n";
}

foreach($rows as $row)
{
    echo nl2br(sputcsv($row, ',', '"', $eol));
}
?>

The test should produce something like the following:

"blue, sky","green, lime",red,black
white,gold,"purple, imperial","grey, slate"
"orange, burnt","pink, hot",violet,indigo
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