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    <p>You can handle it in one of two ways:</p> <p><strong>1.</strong> Use <a href="http://www.mysqlperformanceblog.com/2006/09/04/group_concat-useful-group-by-extension/" rel="nofollow noreferrer">GROUP_CONCAT</a> (as @Dave mentioned in the comment - this is the link: <a href="https://stackoverflow.com/questions/14500748/mysql-php-api-displaying-fetching-multiple-rows-within-rows-from-another-tab/14501190#14501190">MYSQL PHP API - Displaying &amp; Fetching multiple rows within rows from another table</a>). There is a downside however, GROUP_CONCAT has a limit (by default 1024 characters), which you can change with the server variable <code>group_concat_max_len</code>, but you may not have access to do so.</p> <p>This will look pretty much like this:</p> <pre><code>ID | Name | Car Model | Year 1 John BMW, Audi, Renault 1999, 2000, 2003 2 David Mercedes, Ford 2000, 2005 </code></pre> <p>This can get very complicated if there are 30-40 entries per user, and non-readable.</p> <p><strong>2.</strong> The second option is to export it in the following format (not hard to do, you just iterate through all the cars a user has, but write the user only in the first iteration).</p> <hr> <pre><code>ID | Name | Car Model | Year 1 John BMW 1999 Audi 2000 Renault 2003 2 David ..... </code></pre> <p>Here's some sample code (I use plenty of made up methods, that have suggestive names).</p> <pre><code>$csvArray = array(); foreach ($users as $user) { $cars = $user-&gt;getCars(); //random method name. Grabs an array with the cars this user has :) $firstIteration = 1; foreach ($cars as $car) { if ($firstIteration == 1) { // we only set the CSV row the first time we iterate through cars $csvSingle['ID'] = $user-&gt;getId(); // more random method names $csvSingle['Name'] = $user-&gt;getName(); $firstIteration = 0; } $csvSingle['car_model'] = $car-&gt;getCarModel(); $csvSingle['car_year'] = $car-&gt;getCarYear(); $csvArray[] = $csvSingle; // now we add the single row to the big CSV array. } } fputcsv($handle, $csvArray); // $handle is the file you export to </code></pre>
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    1. COThanks this pretty much explains the two choices i have. thankyou very much vlad , dave and jack and yessi
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