i need to have some php code inside javascript
<script ...>
<?php
echo " ... ";
?>
</script>
but this doesnt work. how can u implement php inside javascript that is in a own file javascript.php?
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1javascript with php will end up in a chaosstreetparade– streetparade2009-12-04 21:40:05 +00:00Commented Dec 4, 2009 at 21:40
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1but php with html works very wellstreetparade– streetparade2009-12-04 21:40:52 +00:00Commented Dec 4, 2009 at 21:40
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If you need to go this route I recommend just using inline javascript on your page using the same fashion you show here (your example would work fine). I personally would not allow parsing PHP inside of a JS file.Corey Ballou– Corey Ballou2009-12-04 21:42:46 +00:00Commented Dec 4, 2009 at 21:42
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You should explain in more detail what you are trying to do. The problem is not with combining PHP and JS and they should work together. The problem is that you are probably expecting something different that what they are going to do.Josef Sábl– Josef Sábl2009-12-04 21:45:03 +00:00Commented Dec 4, 2009 at 21:45
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Javascript and PHP works a charm if you know what you are doing.OIS– OIS2009-12-05 00:17:36 +00:00Commented Dec 5, 2009 at 0:17
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5 Answers
That doesn't do what you probably think it does. It'll work, but the PHP gets run once, when the page is loaded, not every time the JavaScript function is called.
Comments
Just for clarification, this is what will happen
index.php
<script type="text/javascript">
<?php echo "alert('hello!');"; ?>
</script>
output html in browser
<script type="text/javascript">
alert('hello!');
</script>
If that is what you want to do, then you can output all the javascript you like. What you cannot do is execute PHP code in the user's browser.
Comments
your can use php to dynamically generate javascript code, but you cannot execute php client side. If you need to execute php you will need to postback or use AJAX
Comments
There seems to be a good bit of misunderstanding of the question... Here is what you want to do to generate JS from PHP on the server:
file javascript.js.php
<?php
header('Content-Type: text/javascript');
?>
// javascript code here
function PrintTime()
{
alert("The time is " + <?php echo json_encode(time()); ?>);
}
Now, include it on the HTML page using normal script tags:
<script type="text/javascript" src="/url/to/javascript.js.php"></script>
The server will process the PHP file, and return javascript from it.
2 Comments
Alex Weinstein
Note that it is KEY to have the file named as .php - otherwise, the server will not process the <?php directives inside.
23W
@gahooa, Thank you for your
header('Content-Type: text/javascript'); It helped my browser to recognize my *.js.php pages as a script.You can't run PHP inside a javascript file. Primarily because PHP runs server side and is processed before the client is sent any actual http info. JavaScript is processed by the browser on the client side and is sent as text.
It looks like you want to pass some kind of dynamic info to the JavaScript. You can do this by passing a variable like this:
<?php $variable="its me"; ?>
<script>
alert('<?php print($variable)?>')
</script>
The output passed to the client is:
<script>
alert('its me')
</script>
What are you trying to accomplish and maybe we can help you come up with a better solution?
2 Comments
bobince
However if
$variable has a backslash or apostrophe in, you're in trouble! Use json_encode to correctly output a JavaScript literal, preferably with JSON_HEX_TAG option to avoid problems where your string contains the text </script>...
John Swaringen
True bobince hadn't thought of that.