I have found similar questions but none as specific as this one.
The following code is a simplified version that reproduces the problem.
<?php
function addProgressText($texto)
{
echo '<script type="text/javascript">';
echo 'document.getElementById("mensajesEnProgreso").innerHTML += "'.$texto.'";';
echo '</script>';
flush();
ob_flush();
}
?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<meta name="viewport" content="width=device-width" />
<title>TEST - Flush for Android</title>
</head>
<body>
<div id="divEnProgreso">
<p id="mensajesEnProgreso"></p>
</div>
<?php
addProgressText("Init...");
sleep(5);
addProgressText("OK<br>Step 1... ");
sleep(5);
addProgressText("OK<br>Step 2... ");
sleep(5);
addProgressText("OK<br>Step 3... ");
sleep(5);
addProgressText("OK<br>FINISHED");
?>
</body>
</html>
The code works as expected (displays the steps one by one) on Chrome, Firefox and IE, but when I open it from an Android browser, the flushes don't work and everything is displayed at once upon completion.
Any hints on the source of the problem?
Thanks
The reason for that is surely the 4K buffering in the Android browser.
The only option you have is to pad the output to 4K as described in this bug report.
Related
I am trying to print / echo utm_source, utm_medium and utm_campaign query values using this PHP code;
echo $_GET['utm_source'];
But strangely for some unknown reason on my server its not printing the values, when I replace utm_source to something else like test_source I am able to see the value in print.
Never faced any such issue, can anyone guide me here.
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Untitled Document</title>
</head>
<body>
<?php echo $_GET['utm_source']; ?>
</body>
</html>
If your site is using WPengine, you will not be able to get the utm variables (and any additional variables after the utm's) out of the URL using PHP. Some web hosts specifically target and remove these utm parameters from server requests for performance reasons. Tricky part is, utm variables are still going remain in the URL which means that you can retrieve them using Javascript instead if you need to.
Source: WPengine article
https://wpengine.com/support/utm-gclid-variables-caching/
Your original question quoted this code
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Untitled Document</title>
</head>
<body>
<?php $_GET['utm_source']; ?>
</body>
</html>
If you add an echo to this statement it will work
<?php echo $_GET['utm_source']; ?>
when tested using
test.com/test.php?utm_source=1
A safer piece of PHP code would be
<?php
if ( isset($_GET['utm_source']) ) {
echo $_GET['utm_source'];
} else {
echo 'the parameter utm_source is missing';
}
?>
I know it's late. but maybe this answer helps another developer.
// get the value of outlink, source, campaign, medium, content
let url = new URL(window.location.href);
let outlink = url.searchParams.get('outlink'),
utmSource = url.searchParams.get('utm_source'),
utmCampaign = url.searchParams.get('utm_campaign'),
utmMedium = url.searchParams.get('utm_medium'),
utmContent = url.searchParams.get('utm_content');
console.table( { outlink , utmSource, utmCampaign,
utmMedium,utmContent});
I need to use "header Refresh" (PHP) + "meta refresh" (HTML) together, the PHP refresh is working, but the meta one is ignored, please help me, thanks
<? $idne2=$_GET['idne']; ?>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
"http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<title>Chat With <?="$idne2";?></title>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
<meta http-equiv="refresh" content="5; URL=http://example.net">
</head>
<body>
<?
echo "You're being redirected to... page";
header("Refresh: 2; URL=ymsgr:sendIM?$idne2");
?>
</body>
</html>
header function will not work if there is any html output before header function.
use JS redirect.
<? $idne2=$_GET['idne']; ?>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
"http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<title>Chat With <?="$idne2";?></title>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
</head>
<body>
<?php
echo "You're being redirected to... page";
sleep(2);
echo ("<SCRIPT LANGUAGE='JavaScript'>
window.location.href='ymsgr:sendIM?$idne2';
window.location.href='http://example.net';
</SCRIPT>");
?>
</body>
</html>
it produces output when it is saved as filename.html
but when i try to change it to filename.php
then open the link in the brown using filename.php
it doesnt produce output anymore
NOTE: i removed some of the code too long
<?php
echo"
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<script>
print code requirement
function printpage()
{
window.print();
}
</script>
print code requirement
<meta name="keywords" content="" />
<meta name="description" content="" />
<meta http-equiv="content-type" content="text/html; charset=utf-8" />
<title>WildFlowers by FCT</title>
<link href='http://fonts.googleapis.com/css?family=Oswald:400,300' rel='stylesheet' type='text/css'>
<link href='http://fonts.googleapis.com/css?family=Abel' rel='stylesheet' type='text/css'>
<link href="style.css" rel="stylesheet" type="text/css" media="screen" />
<style type="text/css">
#wrapper #header-wrapper #header h1 a strong {
font-family: Georgia, "Times New Roman", Times, serif;
size: '100';
font-size: 40px;
</body>
</html>
";
?>
You have to remove <?php and ?>. Between these two tags there must be php-code and no html.
Edit: Maybe no errors are reported, because your server is configured to suppress errors.
Put some space after the echo..And use single quote['] insted of double.And change all single quotes from your code to double quote.(")
eg: -
<?php echo '
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head></head>
<body> Bla bla bla
</body>
</html>';
?>
The problem in your code is, you just started the codes with double quote.So the PHP server consider the next double quote is the closing of the echo statement.So there is nothing to print inside the first two double quote.But if you take the page source, you can see
<!DOCTYPE html PUBLIC
This is because you open PHP tag at the beginning of file:
<?php
Close it before your HTML markup:
<?php
// your php code
?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
You can not have html in your php tags, if you want to use html you have to end the close your php first so something like this:
<?php
// php code here
?>
html code here
<?php
// php here
?>
If You need to write html inside php code use the echo statement.
ex:
<?php echo"
<!DOCTYPE html PUBLIC '-//W3C//DTD XHTML 1.0 Strict//EN' 'http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd'>
<html xmlns='http://www.w3.org/1999/xhtml'>
<head></head>
<body>
//your code here
</body>
</html>";
?>
I currently have a very simple page that redirects to another URL. However for some reason, I cannot get this to work.
I'm sure there is a very simple solution to this problem and any help to make me understand exactly what's going on would be appreciated.
Here is my page:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Test - Youtube</title>
</head>
<body>
<?php
ob_start();
header('Location: vnd.youtube:xjTEqVQVsQs');
ob_end_flush();
?>
</body>
</html>
Thanks
You are having some Outputs on your page before sending header and that's why you can not redirect, you should use output buffering like this:
<?php
ob_start();
?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Test - Youtube</title>
</head>
<body>
<?php
header('Location: vnd.youtube:xjTEqVQVsQs');
die();
?>
</body>
</html>
<?php
ob_end_flush();
?>
<?php
ob_start();
header('Location: vnd.youtube:xjTEqVQVsQs');
ob_end_flush();
?>
remove all the html except above php code if it's only a redirect page.
This is how the code should look like:
<?php
ob_start();
?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Test - Youtube</title>
</head>
<body>
<?php
header('Location: vnd.youtube:xjTEqVQVsQs'); // Are you sure that's the right
address?
?>
</body>
</html>
<?php
ob_end_flush();
?>
Anyway, the page is redirecting to another page, why do you need the html tags?
You should remove all the page content except PHP script:
<?php
ob_start();
header('Location: vnd.youtube:xjTEqVQVsQs');
ob_end_flush();
?>
Or
put your PHP script on top of the page:
<?php
ob_start();
header('Location: vnd.youtube:xjTEqVQVsQs');
ob_end_flush();
?>
Make sure there is no empty space before php tag above.
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Test - Youtube</title>
</head>
<body>
</body>
</html>
As redirect sends headers to the browser it MUST be sent before any output.
You can use the method below to redirect using a different method depending on whether the headers have been sent:
<?php
function redirect($filename) {
if ( ! headers_sent())
header('Location: '.$filename);
exit; // just a good practice to EXIT after redirecting
else {
echo '<script type="text/javascript">';
echo 'window.location.href="'.$filename.'";';
echo '</script>';
echo '<noscript>';
echo '<meta http-equiv="refresh" content="0;url='.$filename.'" />';
echo '</noscript>';
}
}
redirect('http://www.google.com');
?>
This will fallback to using javascript if the headers have already been sent.
If you want to use the header() method it must be at the top of your code before any other output (including whitespace).
is it possible to embed this into html
if (empty($_POST['extras'])) {
$message .="<br /> No extras selected <br />";
} else {
foreach($_POST['extras'] as $extra)
{
$message .="<br />Extras: ".$extra."";
}
}
I would like to place the above php statement at the bottom of this html code.
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
<title>Booking System</title>
<link rel="stylesheet" href="css/bs-admin.css" type="text/css" />
</head>
<body>
<noscript>
<div class="js_error">Please enable JavaScript or upgrade to better browser</div>
</noscript>
<div id="index">
<h1>Thank you for your reservation!</h1>
<p>
<h3>Your Booking is as follows:</h3>
<p>Dear <b><?php echo $custInf[0] ?></b>,
<p>You have Booked: <?php echo $eventInf[0] ?>
<p>Booking Date: <?php echo $eventInf[2] ?>
<p>Booking descriptiong: <?php echo $eventInf[1] ?>
<p>Number of machines booked: <?php echo $qty ?>
<p>Street: <?php echo $comments ?>
<p>Suburb: <?php echo $suburb ?>
<p>Postcode: <?php echo $postcode ?>
<p>Dropoff: <?php echo $dropoff ?>
<p>Duraton: <?php echo $duration ?>
If it's got php code in it then it's no more HTML.
You have to call it .php or .phtml.
PHP generates, or outputs html.
You can have pure html in .php scripts (outside the <?php ?> tags), but not the other way around (i.e. no php code in regular .html files).
If you want to add some logic (the PHP code) within it, you need to have it parsed by a webserver which will, in turn, generate html.
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
<title>Booking System</title>
<link rel="stylesheet" href="css/bs-admin.css" type="text/css" />
</head>
<body>
<noscript>
<div class="js_error">Please enable JavaScript or upgrade to better browser</div>
</noscript>
<div id="index">
<h1>Thank you for your reservation!</h1>
<div>
<h3>Your Booking is as follows:</h3>
<p>Dear <b><?php echo $custInf[0]; ?></b>,</p>
<p>You have Booked: <?php echo $eventInf[0]; ?></p>
<p>Booking Date: <?php echo $eventInf[2]; ?></p>
<p>Booking descriptiong: <?php echo $eventInf[1]; ?></p>
<p>Number of machines booked: <?php echo $qty; ?></p>
<p>Street: <?php echo $comments; ?> </p>
<p>Suburb: <?php echo $suburb; ?></p>
<p>Postcode: <?php echo $postcode ?></p>
<p>Dropoff: <?php echo $dropoff; ?></p>
<p>Duraton: <?php echo $duration; ?></p>
</div>
<?php
$message = "";
if (empty($_POST['extras'])) $message .="<br /> No extras selected <br />";
else
{
foreach($_POST['extras'] as $extra)
{
$message .="<br />Extras: ".$extra;
}
}
echo $message;
?>
</div>
</body>
</html>
I think you're needing to create an empty variable $message before you could start appending "extras" to it. Then all you need to do is echo $message.
Yes you can, however that's not a good way to do it. You should go for the Model-View-Controller model. It separates the HTML code from the actual code that does processing. Many PHP Framework does this. (Though personally i find them too clunky and wrote my own)
Also, embedding HTML into PHP is bad, as again, code should be separated from the HTML by as much as possible.
Example of views and controllers (From my framework):
Controller:
class Controllers extends BaseController{
function index($args=array()){
// process data
$this->render('index', array('data1'=>$data));
}
}
View:
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>My site</title>
</head>
<body>
<h1><?php echo $page->data1; // echos out $data from the view ?></h1>
</body>
</html>
This is much cleaner than your model of embedding php into the HTML and/or vice versa.
Take a look at frameworks, they are usually pretty helpful, although PHP frameworks are generally very restrictive as to what you can do.
Yes, you can do what you are asking. Make sure the extension is recognizable by the php interpreter (usually .php)
If you need to hack something up quick, this is ok. But for anything else than that, look into using some sort of templating language. This becomes an important point because you want to seperate your logic from your display for the sanity of yourself and other developers that will work on your code in the future.
edit: oh, also very important. Don't use $_POST this way without sanitizing the data. It's ripe for XSS injections.
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
<title>Booking System</title>
<link rel="stylesheet" href="css/bs-admin.css" type="text/css" />
</head>
<body>
<noscript>
<div class="js_error">Please enable JavaScript or upgrade to better browser</div>
</noscript>
<div id="index">
<h1>Thank you for your reservation!</h1>
<!--- bunch of stuff omitted here -->
<?php
if (empty($_POST['extras'])) {
echo "<br /> No extras selected <br />\n";
} else {
foreach($_POST['extras'] as $extra)
{
echo "<br />Extras: ".$extra."\n";
}
}
?>