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help with this php and java code please


RickG
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hey guys new to the forum i know bits and pieces of programming but i cannot for the life of me get this code working i cannot put the whole code out there for infringment reasons so here is what i can show

Thanks guys





<?php
require_once (dirname(dirname(dirname(__FILE__))) . DIRECTORY_SEPARATOR . 'bootstrap.php');



$chatroom_id = get_var("id");


?>




<script type="text/javascript">

var dc_chatroom_id = <?php echo $chatroom_id = document.getElementById('id'); ?>;
<!-- if i take this out ^^^^^ and put just 1 thru 6 one of the chatrooms work i have initially 6 rooms so i need to find a way to make this work. --!>


</script>







<div data-role="navbar" data-theme="a">

<ul>
<li id="1"><a href="#room" data-role = 'button' data-transition="fade" data-theme="a">The Hangout</a> </li>
</ul>


<ul>
<li id="2"><a href="#room" data-role = 'button' data-transition="fade" data-theme="a">Electronics Chat</a></li>


</ul>

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PHP cannot call javascript functions. PHP is ran on the server and Javascript in the browser. PHP can only output javascript.

 

I think this line

var dc_chatroom_id = <?php echo $chatroom_id = document.getElementById('id'); ?>;

needs to be

var dc_chatroom_id = document.getElementById('<?php echo $chatroom_id; ?>');

Example output of above line would be like the following if $chatroom_id is set to 1

var dc_chatroom_id = document.getElementById('1');
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PHP can't do that, it doesn't know what javascript is. You can only get PHP to output the necessary javascript code that loads the chat rooms.

 

You can do a for loop loop that outputs the javascript code needed for the chatrooms

eg

for($i = 1; $i <= 6; $i++)
{
   // target chatroom
   echo "var dc_chatroom_id = document.getElementById('$i');";

   // load the chatroom
   echo "javascript_function_that_loads_chatroom(dc_chatroom_id);"
}

But If you're doing that then you may as well handle this with javascript and not PHP. The above PHP code will output the following javascript code

var dc_chatroom_id = document.getElementById('1');
javascript_function_that_loads_chatroom(dc_chatroom_id);
var dc_chatroom_id = document.getElementById('2');
javascript_function_that_loads_chatroom(dc_chatroom_id);
var dc_chatroom_id = document.getElementById('3');
javascript_function_that_loads_chatroom(dc_chatroom_id);
var dc_chatroom_id = document.getElementById('4');
javascript_function_that_loads_chatroom(dc_chatroom_id);
var dc_chatroom_id = document.getElementById('5');
javascript_function_that_loads_chatroom(dc_chatroom_id);
var dc_chatroom_id = document.getElementById('6');
javascript_function_that_loads_chatroom(dc_chatroom_id);
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