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1

Why can't I use a calculated number, from php in jQuery?

I've tried this:

<div id="time">
    <? echo until();?>
</div>
var until = $("#time").html();

And 

var until = <? echo until();?>;

But no one works D:

EDIT: The calculated number will be 472541, and the function: 

<?
/**
* @desc Time until tuesday
* @param string Time format
* @return string timestamp
*/
function until($format = ""){
    $now = strtotime("now");
    $nextTuesday = strtotime("-1 hour next tuesday");
    $until = $nextTuesday - $now;
    if(empty($format)){
        return $until;
    }else{
        return date("$format",$until);
    }
}

?>

EDIT EDIT: Don't know what just happend, but it seems to work now :O :D Thanks a lot, everyone :D

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Please update your answer in order to get (doog) help: What is happening (or should happen) What error(s) do you get? etc? – Veger Aug 10 '11 at 16:38
1  
Can you post until method and the generated HTML? – Joe Aug 10 '11 at 16:38
Have you tried looking at the resulting source code? – Chronial Aug 10 '11 at 16:39
What does the until() function look like? Also, is "short_open_tag" set to "1" in php.ini? – Jason Fuller Aug 10 '11 at 16:41
Aside from the problem, 'hideorshow' is a bad name for a field. just call it 'hide' or call it 'show'. That makes it obvious what a '1' will mean to anyone else who has to work with this db. 'hideorshow' makes the 1/0 values completely ambiguous – Marc B Aug 10 '11 at 16:46
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5 Answers

up vote 0 down vote accepted

Did you try it inside a script block, like so:

<script type="text/javascript">
/* <![CDATA[ */

    var until = <?php echo until();?>;
    alert(until);

/* ]]> */
</script>
share|improve this answer
Yea, just didn't want to write it down (Too lazy) – Mobilpadde Aug 10 '11 at 16:40
and what is printed to the html, if you echo your until() result there? – SunnyRed Aug 10 '11 at 16:43
It would be 472541 – Mobilpadde Aug 10 '11 at 16:47
last but not least, what do you see, if you add an alert right after the definition of the variable? – SunnyRed Aug 10 '11 at 16:49
up vote 1 down vote

The way I have been pulling PHP values from something like this into a variable is to make a new attribute in the DIV, something like 

<div id="time" value="<?= until(); ?>">

</div>

then, by using JQuery, I can pull the variable by saying 

var until = $('#time').attr(value);
share|improve this answer
Nope, didn't help D: – Mobilpadde Aug 10 '11 at 16:49
and you made sure the $variable can echo properly in the first place? I guess I meant to say $variable is until(); I will edit the above to show this – ntgCleaner Aug 10 '11 at 16:52
up vote 0 down vote

can you try this

  <? $output =until();  echo $output?>

var until = <? echo $output ?>;
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-1 for shothand <?php ?> tags. – Madara Uchiha Aug 10 '11 at 16:44
3  
+1 because that is a stupid reason to down vote. – Jason Fuller Aug 10 '11 at 16:54
up vote 0 down vote

If you want to echo out the results of the until function, the function would have to actually return something. The following would work perfectly.

function until() {
    return '1';
}

<script type="text/javascript">
    var until = <?php echo json_encode(until()); ?>;
</script>

Note the use of json_encode(). While not necessary in this case, since it'd just output a '1'. using json_encode in general is a good idea, as it guarantees that whatever's coming out of PHP will be syntactically valid Javascript. It's very easy to generate Javascript on the fly that contains syntax errors, which will kill the rest of your script immediately.

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up vote 0 down vote

First things first, you shouldn't be using shorthand <?php ?> tags, it's not recommended. And second, I can't trace your problem, really.

http://codepad.viper-7.com/ufrfYR

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