Javascript variables to PHP variables?

[fifteen15]

How do I pass the values of a javascript variable to a PHP variable?

Thanks.

[khaine]

You will have to use a form to submit the variables of write a url with the variables in.

[weekender]

i think the only way is to have the javascript refresh the page / call a new page with the js variables in the url. Then the php parser would automatically put them into the $_POST global array.

adam

[fifteen15]

With this case, i'm not using form. Are there other ways on how to pass the values besides the url thing?

[khaine]

Unfortunatly not. The php script needs the values passing via either the url string or by posting though a form.

What is the function of the script you are writing?

[fifteen15]

The javascript just get a value and the value needs to be stored on a mysql database. If there are no other ways, are there ways on how javascript can insert values on a mysql database?

Another thing, what's the diffference between the POST and GET method? Do they have different functions?

Thanks you very much.

[weekender]

PHP is a server-side language - it does all it's calculations on the web server, then passes the output to the browser.

Javascript is client-side - the source is passed to the client, where it is calculated.

Because of this, javascript cannot send any data back to the server except in POST (ie forms) or GET (ie URL variable) methods. Therefore, for a js script to pass variables into a mysql database, it would need to use either POST or GET to pass the vars to a server side script (eg PHP, ASP etc) which would then pass the vars into the database. There are no quicker methods.

[Drakla]

If you know the amount of variables you're submitting to your script stay the same you can put some hidden fields in the form and then set them with javascript. E.g say you need two values sending, in your form have:

<form action="blah blah" name="myform">
<input name="hidingfella1" type="hidden" value="just hiding so far 1">
<input name="hidingfella2" type="hidden" value="just hiding so far 2">
</form>

Then in a later piece of javascript (called via an onsubmit, onclick or whatver you need do:

document.myform.hidingfella.value="I like chicken";
document.myform.hidingfalla.value="oh yeah, chicken is great!";

That's the only way I know how to do it. Does anyone know if you can just squirt data straight into a $_POST type thing and then submit with javascript as I've tried to add elements to a form post page load but it's not having it.

I know this isn't truly php, but it is for a php receiver - so I'm safe, goddam yoOoO.

[dta]

you can use this (it takes 2 seperate files though)

//the javascript part, whatever page this may be
<script>
myVal="something you want to pass";
location="phpPage.php?myVal=" + myVal;
</script>

//phpPage.php
<?
echo $_GET['myVal'];
?>

thats a basic alternative to using forms

[Corpheous]

You won't find a simpler way other than using a form, hidden or not. You can't just magically insert variables with Javascript because you have to send something to the server, and the only way Javascript interacts with the server on the level you're talking about is through forms. Otherwise, you may as well learn Java and write your own program, and Java is teh suck! So stick with forms, trust me, it's for your own good.

[dta]

Originally posted by Corpheous
You won't find a simpler way other than using a form, hidden or not. [...] So stick with forms, trust me, it's for your own good.

i think using a javascript 'locate' was MUCH simpler than writing html for an entire form.. theres different solutions to different problems, and passing 1 or 2 variables via locate is easier-not to mention less mess- than making a form.

youre right to use forms if you want the PHP code inside the same page, but if youre gonna let php handle the variables through another page, just redirect there writing the query yourself

[weekender]

there's no reason why you can't pass the variables using location and still have the php on the same page

if(no post variables){
echo javascript_that_produces_post_variables
relocate to current page
}
continue...

[dta]

i meant something different by that, but i just tried it and it works, so im wrong either way haha -- the main purpose of the post was to point out that location can be used to pass vars