Sending multiple variables from JS to PHP

Question

I'm trying to pass two javascript variables to PHP. When there's only one then it's working but I have no clue how to send two at once. Here's my code

    function save(nr) {
     var xr = new XMLHttpRequest();
     var url = 'saveColor.php';
     var text = document.getElementById('color'+nr).value;
     var vars1 = "newText="+text;
     var vars2 = "variable="+nr;

     xr.open("POST", url, true);
     xr.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
     xr.send(vars1);
}

So sending the "vars1" variable works fine, but where or how I should put "vars2" to send them at once? Something like

xr.send(vars1, vars2);

Doesn't work.

piotr · Accepted Answer · 2016-12-10 23:02:07Z

2

This will work fine:

var data = new FormData();
data.append('var1', 'var1value');
data.append('var2', 'var2value');

and then use it like you tried before

xr.send(data);

answered Dec 10, 2016 at 23:02

piotr

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6 Comments

Vortic Over a year ago

If I use this will I be able to get those separately or will it be treated as one variable in PHP?

piotr Over a year ago

It will be converted to string like that var1=var1valuee&var2=var2value. First check, then post a comment

Vortic Over a year ago

I checked it and something is still not working. If I followed your example should I get those variables in PHP via $someVar = $_POST[var1]; etc? Because that's not working ($someVar doesn't show anything when I echo it)

piotr Over a year ago

dump entire $_POST variable

Vortic Over a year ago

echoing $someVar = var_dump($_POST[var1]); doesn't output anything either if that's what you meant.

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Vivek Jain · Accepted Answer · 2020-09-21 07:47:57Z

0

It can also be implemented this way

var strURL = "auto_ppm_plan_generation_table.php?ppm_frequency=" + ppm_frequency + "&ppm_month=" + ppm_month + "&ppm_week=" + ppm_week;

edited Sep 21, 2020 at 7:47

Vivek Jain

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answered Sep 21, 2020 at 7:41

user14313279

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