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i have a problem with javascript. i´d like to use colorbox to display some responsemessages. is there anyone who knows how to refer to a php script variable within a javascript?

to bring an example

<?php if(isset($msg)):?>
<script type="text/javascript">
$(document).ready(function(){
$.colorbox({iframe:true, href:"<?php print variable $message from this site", scrolling:false, innerWidth:"408px", innerHeight:"292px", opacity:0.75, overlayClose:false, escKey:false, });
});
$("#colorboxCloseBtn").click(function() {
$.colorbox.close();
});
</script>
<?php endif; ?>

i´m not sure if i do understand the usage of iframe, inline, html. if i use iframe this will open a complete idependent site without any relation to the mainpage, isn´t it? inline i use, when i would like to relate on content which is on the mainpage, like i like to, right? and html... don´t know.

thanks for help.

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2 Answers 2

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no, this is barking up the wrong tree the way you're doing this, you need to put message into a session then have href get the full url of the new file then have that file echo nothing but $message:

//EG:your.php
<?PHP       
   session_start();
   $_SESSION['message'] = $message;
   if(isset($msg)) {
     ?>        
     <script type="text/javascript"> 
       $(document).ready(function(){
            $.colorbox({iframe:true, href:"message_get.php", scrolling:false, innerWidth:"408px", innerHeight:"292px", opacity:0.75, overlayClose:false, escKey:false });
            $("#colorboxCloseBtn").click(function() {
                $.colorbox.close();
            });
        });
     </script>
   <?php 
   } 
 ?>

then a whole new document

//EG: message_get.php
<?PHP       
   session_start();
   echo $_SESSION['message'];
?>

to be honest i'd get rid of the iframe you probably don't need it because this is a very ineligant way of doing this. You look to me like you've learnt ASP.NET first

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7 Comments

hello and thanks for posting. this is working like i dreamed of :) the only thing i do not understand is that errormessage that i will get when i will call the page: Warning: session_start() [function.session-start]: Cannot send session cache limiter - headers already sent
the call to session_start(); on your.php has to be right at the top
problem is that the box need its own installation. means that before i can call the function it needs to be defined with a link to css and the js file. when i set it to top another errmessage will be shown: Warning: Unknown: Your script possibly relies on a session side-effect which existed until PHP 4.2.3. Please be advised that the session extension does not consider global variables as a source of data, unless register_globals is enabled. You can disable this functionality and this warning by setting session.bug_compat_42 or session.bug_compat_warn to off, respectively in Unknown on line 0
ok. The Error message is because sessions=cookies and cookies cannot be sent after you've started piping html out.. cookies must get nominated in the document header (you don't see/smell/touch that header 99 times out of a 100 it's not the <head> tag)..
so to fix it you need to make sure you call session_start() somewhere up the "include tree" (you can use DIE("dead !".__FILE__.__LINE__); to degbug view the source in your browser until the "dead!" text appears above the very first bit of HTML pipe (EG: echo and print and response.write all output to the html pipe) read more here [link]php.net/manual/en/function.headers-sent.php[/link]
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1 
<?php if(isset($msg)):?>
    <script type="text/javascript">
       $(document).ready(function(){
           $.colorbox({iframe:true, href:"<?php echo $message ?>", scrolling:false, innerWidth:"408px", innerHeight:"292px", opacity:0.75, overlayClose:false, escKey:false });
           $("#colorboxCloseBtn").click(function() {
               $.colorbox.close();
           });
       });
    </script>
<?php endif; ?>

using <?php echo $message ?> will be what you are after

I have moved the click method inside the ready() function too - this ensures the DOM element is ready before attaching the click handler.

I have also removed the last comma from escKey:false in the colorbox function call

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5 Comments

@John well ... are you sure $message is defined ... as your if statement checks for $msg not $message
yes it is. i´m using the variable from php which defines the text. if i use this the colorbox even won´t start! if i replace that with an external link like href:"example.php" that will pop up the box and show me the content of "example.php" like it should to.
@John please check that $message is actually set ... do alert('message = <?php echo $message ?>'); and see what happens
the variable is set correct. i know that because the same variable will be called on another place where i created a div where i it will show up. and i even know that it is "$msg". i just posted another, sorry. <div><!--<?php if(isset($msg)):?> <div id="msg"> <?php echo $msg;?> </div> <?php endif;?> </div>-->
to avoid misunderstandings: <?php if(isset($msg)):?> <script type="text/javascript"> $(document).ready(function(){ $.colorbox({iframe:true, href:"<?php echo $msg ;?>", scrolling:false, innerWidth:"408px", innerHeight:"292px", opacity:0.75, overlayClose:false, escKey:false, }); }); $("#colorboxCloseBtn").click(function() { $.colorbox.close(); }); $(document).ready(function() { /* Automatically resize to content var y = $(document.body).height(); var x = $(document).width(); ... <?php endif; ?>

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