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copied!<p><a href="http://www.php.net/array_filter" rel="nofollow"><code>array_filter</code></a>, when passed no second parameter, will remove any empty entries. From there you can proceed as normal:</p> <pre><code>foreach (array_filter($list) as $each){ $places .= $each . ','; } </code></pre> <p>Though you can also use <a href="http://php.net/manual/en/function.implode.php" rel="nofollow"><code>implode</code></a> if you're just turning it in to a CSV:</p> <pre><code>$places .= implode(',', array_filter($list)); </code></pre> <p><strong>Side Note</strong> Though in this case <code>array_filter</code> may work, it is worth noting that this removes entries that result in a <a href="http://www.php.net/manual/en/language.types.boolean.php#language.types.boolean.casting" rel="nofollow">"falsy" result</a>. That is to say:</p> <pre><code>$list = array_filter(array('foo','0','false','')); // Result: // array(2) { // [0]=> // string(3) "foo" // [2]=> // string(5) "false" // } </code></pre> <p>So be careful. If the user could potentially be entering in numbers, I would stick with comparing <code>empty</code>. Alternatively you can use the second parameter of <code>array_filter</code> to make it more explicit:</p> <pre><code>function nonEmptyEntries($e) { return ((string)$e) !== ''; } $list = array_filter($list, 'nonEmptyEntries'); // result: //array(3) { // [0]=> // string(3) "foo" // [1]=> // string(1) "0" // [2]=> // string(5) "false" //} </code></pre> <p>(Note that the <code>0</code> entry is kept, which differs from a blanket <code>array_filter</code>)</p>

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