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Very simple poll with jQuery, PHP and PDO
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| <?php | |
| $host="localhost"; //url of database server; | |
| $dbname=""; //database name; | |
| $user=""; //database username; | |
| $pass=""; //database password; | |
| $table=""; //database table; | |
| //Connection to mysql server; | |
| $DBH = new PDO("mysql:host=$host;dbname=$dbname", $user, $pass); | |
| if(isset($_REQUEST['answer'])){ | |
| # STH means "Statement Handle" | |
| $data = array('url' => $_REQUEST['url'], 'answer'=> (int) $_REQUEST['answer']); | |
| $STH = $DBH->prepare("INSERT INTO Q_funciona ( url, answer ) values ( :url, :answer)"); | |
| $STH->execute($data); | |
| } | |
| $data = array('url' => $_REQUEST['url']); | |
| $STH = $DBH->prepare("SELECT url, answer, COUNT(answer) AS total FROM Q_funciona WHERE url=:url GROUP BY answer"); | |
| $STH->execute($data); | |
| while($row = $STH->fetch()) { | |
| $array[$row['answer']] = $row['total']; | |
| } | |
| echo json_encode($array); | |
| # close the connection | |
| $DBH = null; | |
| ?> |
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| <!DOCTYPE html> | |
| <html> | |
| <head> | |
| <meta charset=utf-8 /> | |
| <meta name="viewport" content="width=device-width, initial-scale=1.0" /> | |
| <script type="text/javascript" src="http://code.jquery.com/jquery-1.10.1.min.js"></script> | |
| <script type="text/javascript" src="survey.js"></script> | |
| </head> | |
| <body> | |
| <div id="survey"> | |
| Are you ok? | |
| <button value="1">Yes</button> | |
| <button value="0">No</button> | |
| </div> | |
| </body> |
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| //requires jQuery | |
| var origin = window.location.protocol + "//" + window.location.host + window.location.pathname; | |
| var url = "collector.php"; //url of collector.php; | |
| $(document).ready(function() { | |
| $("#survey button").on("click", function( event ) { | |
| answer = $( this ).val(); | |
| xhr_get({url:origin, answer: answer}).done(function(){ | |
| $("#survey button").prop("disabled", true) | |
| }); | |
| }); | |
| xhr_get({url:origin}); | |
| }); | |
| function is_undefined(data){ | |
| if(typeof data === "undefined"){ | |
| return "0"; | |
| }else{ | |
| return data; | |
| } | |
| } | |
| function xhr_get(data){ | |
| return $.ajax({ | |
| type: "POST", | |
| dataType: "json", | |
| url: url, | |
| data: data | |
| }).done(function(resp){ | |
| if(resp !== null){ | |
| $("#survey button[value=1]").text("Sí ("+is_undefined(resp[1])+")"); | |
| $("#survey button[value=0]").text("No ("+is_undefined(resp[0])+")"); | |
| } | |
| }); | |
| } |
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