php / javascript无法在线工作

Question

I have some code in php and javascript which is working on my computer, localhost, but is not working online. I use Godaddy and I called them. They said everything looks good on their end. They said they can't help with coding problems. I have a database containing some quotes. The function I'm trying to perform is to get a random quote from the database and display it on my webpage then change it to a new random quote every 10 seconds. I don't know anything about php or javascript. I paid someone to write this code and they said the code is good.

The javascript is:

var qouteobj=createRequestObject();
function getqoute(){
qouteobj.open("GET","php/randomquote.php",true);
qouteobj.send(null);
qouteobj.onreadystatechange=function(){
if(qouteobj.readyState==4 && qouteobj.status==200){
var q_rec=qouteobj.responseXML;
var rq=q_rec.getElementsByTagName('qoute');
var txt="";
var i;
for (i=0;i<rq.length;i++){
txt=txt + rq[i].childNodes[0].nodeValue + "<br>";
}
document.getElementById('random-quote').innerHTML=txt;
setTimeout('getqoute()',10000);
setTimeout('getqoute()',10000);
}
}

The randomquote.php file is:

<?xml version='1.0' ?>
<?php
include "connect.php";
header("Content-Type: text/xml; charset=utf-8");
header("Expires: Mon, 26 Jul 1997 05:00:00 GMT" );
header("Last-Modified: " . gmdate( "D, d M Y H:i:s" ) . "GMT" );
header("Cache-Control: no-cache, must-revalidate" );
header("Pragma: no-cache" );

$sql = "SELECT quote FROM quotes where Rand() Limit 1";
$result = mysqli_query($conn, $sql);
$row = mysqli_fetch_assoc($result);
$xml="<root>";
$xml.="<qoute>".$row['quote']."</qoute>";

$xml.="</root>";
echo $xml;
//echo $row['quote'];
mysqli_close($conn);
?>

The html is simply:

<p id="random-quote"></p>

I know it's connecting to the database because I have other php code on the site that is working, pulling data from the database and displaying it on the page. The page is at: www.bestmoviequote.com Thanks for looking into this for me.

Answer 1

I guess the problem comes from the fact you write things before sending headers.

try with that :

<?php
    include "connect.php";

    $sql = "SELECT quote FROM quotes where Rand() Limit 1";
    $result = mysqli_query($conn, $sql);
    $row = mysqli_fetch_assoc($result);
    mysqli_close($conn);

header("Content-Type: text/xml; charset=utf-8");
header("Expires: Mon, 26 Jul 1997 05:00:00 GMT" );
header("Last-Modified: " . gmdate( "D, d M Y H:i:s" ) . "GMT" );
header("Cache-Control: no-cache, must-revalidate" );
header("Pragma: no-cache" );
$xml="<?xml version='1.0' ?>";
$xml.="<root>";
$xml.="<qoute>".$row['quote']."</qoute>";
$xml.="</root>";
echo $xml;

If there is still problems, please add ini_set('display_errors', 1) before the include of the connect script, and give us the errors

Answer 2

We got it working. We also had a problem with the original code not displaying a truly random quote. It was favoring quotes with a higher amount of likes (I had another page where users could like the quotes.) The following solution fixed both problems.

Javascript:

var qouteobj=createRequestObject();
function getqoute(){
qouteobj.open("GET","/php/randomquote.php",true);
qouteobj.send(null);
qouteobj.onreadystatechange=function(){
if(qouteobj.readyState==4 && qouteobj.status==200)
{
var q_rec=qouteobj.responseText;
if (window.DOMParser)
{
parser=new DOMParser();
xmlDoc=parser.parseFromString(q_rec,"text/xml");
}
else // Internet Explorer
{
xmlDoc=new ActiveXObject("Microsoft.XMLDOM");
xmlDoc.async=false;
xmlDoc.loadXML(q_rec);
}
var rq=xmlDoc.getElementsByTagName("qoute");
var txt="";
var i;
for (i=0;i<rq.length;i++){
txt=txt + rq[i].childNodes[0].nodeValue + "<br>";
}
document.getElementById('random-quote').innerHTML=txt;
setTimeout('getqoute()',10000);
}
}
}

randomquote.php:

<?php
$servername = "localhost";
$username = "username";
$password = "password";
$dbname = "moviequotes";
$conn = mysqli_connect($servername, $username, $password, $dbname);
if (!$conn) {
die("Connection failed: " . mysqli_connect_error());
}
header("Content-Type: text/xml; charset=utf-8");
header("Expires: Mon, 26 Jul 1997 05:00:00 GMT" );
header("Last-Modified: " . gmdate( "D, d M Y H:i:s" ) . "GMT" );
header("Cache-Control: no-cache, must-revalidate" );
header("Pragma: no-cache" );
$sql = "SELECT COUNT(*) FROM quotes";
$result = mysqli_query($conn,$sql);
$rows=$result->fetch_row();
//$rows = mysqli_num_rows($result);
$rndm=rand(1,$rows[0]);
$sql = "SELECT quote FROM quotes where id='".$rndm."' Limit 1";
$result = mysqli_query($conn,$sql);
if($result)
{
$row = mysqli_fetch_assoc($result);
$xml='<root>';
$xml.='<qoute>'.htmlspecialchars($row['quote']).'</qoute>';
$xml.='</root>';
echo $xml;
}
else
{
echo "Not working";
}
mysqli_close($conn);
?>