A quick example of how to handle comma separated input from a POST variable in PHP. The code below will turn your POST variable into an array containing the user’s input which you can further validate or store in a database. This is useful for letting users add tags to items on your website.
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$tagsString = isset($_POST['tags']) ? (string)strip_tags($_POST['tags']) : ''; if ($tagsString != '') { $tags_array = explode(",", $tagsString); $tags_array = array_unique($tags_array); //no dups, please foreach($tags_array AS $key => $tag) { $tag = trim(stripslashes($tag)); if($tag == '') continue; //skips if empty echo $key.' - '.$tag; } } |