PHP - Onload Function Repeating

Hey,

I'm not that familiar with PHP so maybe what I'm asking for is not even possible. I plan to establish a webserver that is connected to a RS232 device. I don't have any problems accessing  the RS232 interface with a PHP-script, it's all working fine.

Now I want the incoming data from the device being display on the servers webpage almost in realtime. When I say almost I mean that the client who is logged on to the website should be able to define the update rate of the incoming data.

So here comes the problem, I need something like the java script setinterval() function that is working on the server-side and repeats the data request to the device in an infinite loop with the given time interval.
I don't want to refresh the whole page as I will have to update about 20 sets of data within seconds!

I found this code:
http://phpclasses.chimit.nl/package/5544-PHP-Call-a-function-after-a-period-of-time.html
it looks pretty promissing but I just can't make it working...

As I said I'm a PHP-noob so I just put the code below on the start of my own code and provided the Timer.class.php file in my project folder. Could anyone explain how I could make the test function repeating endlessly on a 1sec basis using this code so I would get a screen full of "called"? So far I only get two "called" :-)

Thanks!


declare(ticks=100);
function test ()
{
    print "<br>called";
}
require_once 'Timers.class.php';
setTimeout('test', 110000000);
setInterval('test', 10000000);

Hi Guys   I wonder if someone can explain something that is probably quite basic.   When I try to add an event listener and target a normal function this works fine - e.g. 'window.addEventListener('load',test)'.  However, if I try to target a function that is a property of an object this fails - e.g. 'window.addEventListener('load',initialiser.init)'. Further in this latter case I also get a console log saying it's undefined.   The code for this example is below.   So my question is why does it fail onload when I use a function in an object as opposed to a straight function? Presumably it's something to do with the way the document and the code are loaded or initialised but what is it that makes them behave differently.   Thanks,   Drongo

<script>
       
       //this function call works fine
       //window.addEventListener('load',test);

       //this functiton call fails and is undefined in console
	window.addEventListener('load',initialiser.init);
	
	//example object holding a method
	var initialiser = {
		
		init:function(){
			alert('Init called!');
		}
	};

	//some random function
	function test(){
	
		alert('test called!');
	}
</script>

Edited by Drongo_III, 18 May 2014 - 10:59 AM.

When I log in to my website I am getting something like this in the URL...
Code: [Select]
http://local.debbie///////////articles/article.php?slug=postage-meters-can-save-you-money

If I then navigate to other pages everything seems fine and I get a normal URL like this...
Code: [Select]
http://local.debbie/articles/consider-becoming-an-s-corporation
What is going on?!   


Debbie

can someone help to add new products and increase the quantity of the product when pressing the + button, but it works for [-]

Code: [Select]
<?php
include "./php/connection.php";

function products () {
$query = "SELECT * FROM product";
if (@mysql_num_rows($query)==0) {
echo "There are no products to display!";
}
else {
while ($query_row = mysql_fetch_array($query)) {
print
"<div class='product'>" .
"<img class='img' src=". $row["Image"]." alt='phone' width='100' height='150' />" .
"<p class='name'>".$row["Name"]."</p>".
"<p class='price'>&pound;". $row["Price"] ."</p>".
"<p><a href='./cart.php?ProductID=". $row["ProductID"]."' class='myButton'>More Info</a></p>".
"</div>";
}
}
}

if (isset($_GET['ProductID'])) {
$quantity = mysql_query('SELECT * FROM product WHERE ProductID = ' .$_GET["ProductID"]);
while ($quantity_row = mysql_fetch_array($quantity)) {
if ($quantity_row["Quantity"]!=@$_SESSION["cart_".$_GET["ProductID"]]) {
@$_SESSION["cart_".$_GET["ProductID"]]+="1";
}

}
}

if (isset($_GET["remove"])) {
$_SESSION["cart_".$_GET["remove"]]--;
header("Location: ./cart.php"); # Go back to the login pages
}

if (isset($_GET["delete"])) {
$_SESSION["cart_".$_GET["delete"]]="0";
header("Location: ./cart.php"); # Go back to the login pages
}

function paypal_items() {
$num = 0;
foreach($_SESSION as $name => $value) {
if ($value!=0) {
if (substr($name, 0, 5) == "cart_") {
$productid = substr($name, 5, (strlen($name)-5));
$query = mysql_query('SELECT ProductID, Manufacturer, model, Price FROM product WHERE ProductID =' .$productid);
while ($query_row = @mysql_fetch_array($query)) {
$num++;
echo '<input type="hidden" name="item_number_'.$num.'" value="'.$productid.'">';
echo '<input type="hidden" name="item_name_'.$num.'" value="'.$query_row['Name'].'">';
echo '<input type="hidden" name="amount_'.$num.'" value="'.$query_row['Price'].'">';
echo '<input type="hidden" name="shpping_'.$num.'" value="0">';
echo '<input type="hidden" name="shpping_'.$num.'" value="0">';
echo '<input type="hidden" name="quantity_'.$num.'" value="'.$value.'">';
}
}
}
}
}



function cart () {
print
"<table id='producttable' border='1'>".
"<tr>".
"<td class='td top'>Delete</td>".
"<td class='td top'>Product Name</td>".
"<td class='td top'>Quantity</td>".
"<td class='td top'>Price</td>".
"<td class='td top'>Sub Total</td>".
"</tr>";
foreach($_SESSION as $name => $value) {
if ($value>0) {
if (substr($name, 0, 5) == "cart_") {
$productid = substr($name, 5, (strlen($name)-5));
$query = mysql_query('SELECT * FROM product WHERE ProductID =' .$productid);
while ($query_row = @mysql_fetch_array($query)) {
$sub = $query_row["Price"] * $value;
print
"<tr>".
"<td class='td'><a href='./cart.php?delete=".$productid."'> [Delete] </a></td>".
"<td class='td'>".$query_row["Manufacturer"]."</td>".
"<td class='td'>".$value."</td>".
"<td class='td'><a href='./cart.php?ProductID=".$productid."'> [+] </a>&pound;".$query_row["Price"]."<a href='./cart.php?remove=".$productid."'> [-] </a></td>".
"<td class='td'>&pound;".$sub."</td>".
"</tr>";
}
}
@$total += $sub;
}
}
if (@$total==0) {
echo "<p>Your basket is empty</p>";
}
else {
echo @" Total: &pound" .$total;
?>
                            <form action="https://www.paypal.com/cgi-bin/webscr" method="post">
                                <input type="hidden" name="cmd" value="_cart">
<input type="hidden" name="upload" value="1">
                                <input type="hidden" name="business" value="kamran193@hotmail.co.uk">
                                <?php
paypal_items();
?>
                                <input type="hidden" name="currency_code" value="GBP">
                                <input type="hidden" name="amount" value="<?php echo $total; ?>">
                                <input type="image" src="http://www.paypal.com/en_US/i/btn/x-click-but03.gif" name="submit" alt="Make payments with PayPal - it's fast, free and secure!">
                            </form>
<?php
}
echo "</table>";
}

echo cart();
echo products();
?>
           

Code: [Select]
$getrest =  mysql_query("SELECT * FROM block WHERE sid='$id' ORDER BY `id` DESC",$this->connect);

while($row1 = mysql_fetch_assoc($getrest)) {

$idz = $row1['id'];

$getmore =  mysql_query("SELECT * FROM block WHERE sid='$idz' ORDER BY `id` DESC",$this->connect);
while ($row2 = mysql_fetch_assoc($getmore)) {

}

}

you see i'm using the result from the first query in the where clause of the second query.  This isn't good practice as what i'm trying to accomplish could lead me doing this up to ten times.  what would be a better way to do this than while loops inside of while loops?


example?