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Trying to move html code through the url and catch it with $_GET

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Heya all,
Im currently trying to make a myspace tool where you colorize text of yours in different colors.
Im moving the html code through the url and i then catch it with $_GET in another php file.

I print the $output into the url, faded.php?output=$output
<iframe frameborder="0" name="preview" width="627" src="faded.php?output=<?print $output;?>" height="187" style=margin:0px;padding:0px;></iframe></div>
<div id="Layer1" style="position:absolute; left:10px; top:216px; width:283px; height:118px; z-index:1; visibility: visible;">

I then catch it in another file using $_GET
$output = "";
$output = $_GET['output'];
$output = str_replace("~", "#", $output);
Print' <div id="Layer3" style="position:absolute; left:0px; top:0px; width:627px; height:187px; z-index:3; background-color: #000000; layer-background-color: #000000; border: 1px none #000000">' . $output . '</div>';

The problem is that i cant type very long text, is there a limit on how much the url can store?
If so what other ways are there?

Best Regards

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To starta  session add the follow at the very top of every page, prefereably on line 1, that will use sessionss:
[code=php:0]<?php session_start(); ?>[/code]

Now to set/read a session:
[code=php:0]// set a session var:
$_SESSION['session_var_name_here'] = 'some value';

//read session var:
echo $_SESSION['session_var_name_here'];[/code]

So with your problem you'll wnat to do this:
[code=php:0]// dont for get to start the session

$_SESSION['htmlStuff'] = <<<HTML
add your html code here

Tnen on the page you wnat to use the html you can access it using $_SESSION['htmlStuff'] variable, agian dont forget to added session_start(); at the top of the page.

Also make sure THERE IS NO OUTPUT before you use the session_start function. Otherwise your page may fail to load or you'll get a header already sent error message.

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Yes The GET method has a limit while the POST method does not. You cannot exceed 100 characters in the value for the GET method

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