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How can I use a JavaScript variable as a PHP variable?
I need to use javascipt variables in PHP, how can I do that?
eg:
<script>
var abc = 'this is text';
</script>
How can I read variable abc in php?
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2you'll get an explanation over hereUttara– Uttara2012-08-11 07:34:32 +00:00Commented Aug 11, 2012 at 7:34
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1It doesn't make sense--Javascript is interpreted client-side, while PHP is interpreted server side.geometrian– geometrian2012-08-11 07:34:49 +00:00Commented Aug 11, 2012 at 7:34
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4 Answers
I am not sure will this help you in anyway. But in this way you can use javascript in server side.
<script type="text/javascript">
var abc= 'this is text';
<?php $abc = "<script>document.write(abc)</script>"?>
</script>
<?php echo $abc;?>
Comments
One way of doing it is to make use of a hidden text/input box.
<input type="text" style="display:none" id="hiddenVal" />
In the Javascript assign the variable to the input box.
<script>
function loadValues()
{
var abc = 'this is text';
document.getElementById("hiddenVal").value = abc;
//alert(document.getElementById("hiddenVal").value);
}
</script>
<body onload="loadValues();">
<form action="processing.php" method="post">
<input type="text" style="display:none" id="hiddenVal" />
<input type="submit" name="submit" id="submit" value="Submit" />
</form>
</body>
This is one method to allow you to use Javascript variable and post it to the backend. Alternatively if you want to display these values just remove the
style="display:none"
on the control.
Now after the post occurred one should be able to pick up the variable using processing.php
<?php
echo $_POST["hiddenVal"];
?>
Very dirty way of doing this but does the trick.
Comments
You're going to want to try something with AJAX. jQuery has a nice AJAX library if doing it pure doesn't sound too appealing to you.
Comments
The way its possible is:
redirect to a php script
or
an AJAX call to a PHP script
