Posting multiple values to PHP from Ajax request

Question

I have an Ajax request to save data from JavaScript and write it to a file using a separate ("saveData.php") PHP file. I want to know if I can "POST" multiple JavaScript variables / strings within the same Ajax request.

For instance, I currently have this:

function saveData(){ //sends an AJAX request to saveData.php
$.ajax({
    type: "POST",
    url: "saveData.php",
    dataType: "text/plain",
    ContentType: "charset=utf-8",
    data: {"data": dataString},
  })
}

And this works great via my PHP file, which as this code:

$data = $_POST["data"];
$theFile = fopen("Data/" . FileNameHere . ".txt", "a+");

// Save data into a file based on their username
fwrite($theFile, $data);
fclose($theFile);

But I want to save the file based on their userID, which is a JavaScript variable.

Can I do something like this:

function saveData(){ //sends an AJAX request to saveData.php
$.ajax({
    type: "POST",
    url: "saveData.php",
    dataType: "text/plain",
    ContentType: "charset=utf-8",
    data: {"data": dataString},
    data1: {"data1": userID},   <-----new line with JS variable 'userID'
  })
}

And PHP file like this:

// Prepare line of data to save.
$data = $_POST["data"];
$userID = $_POST["data1"];     <--------New code to POST "data1" from Ajax
$theFile = fopen("Data/" . $userID . ".txt", "a+");

// Save data into a file based on their username
fwrite($theFile, $data);
fclose($theFile);

It's JSON. Have a read of w3schools.com/js/js_json_intro.asp (or other tutorial) — Jonnix
– Jonnix, Commented Dec 21, 2017 at 15:09

Phoenix404 · Accepted Answer · 2017-12-21 15:19:26Z

6

Yes, you can, you are passing a JSON Object so it can have as many properties as you like.

Read More about, how to send multiple data in server side via ajax. Try this

function saveData(){ //sends an AJAX request to saveData.php
$.ajax({
    type: "POST",
    url: "saveData.php",
    dataType: "text/plain",
    ContentType: "charset=utf-8",
    data: {
            "data": dataString, 
            "data2":val2,
            "data3":val3,
            "data4":val4
          },
  })
}

And PHP file like this:

$data = $_POST["data"];
$userID = $_POST["data2"];
$theFile = fopen("Data/" . $userID . ".txt", "a+");

// Save data into a file based on their username
fwrite($theFile, $data);
fclose($theFile);

edited Dec 21, 2017 at 15:19

answered Dec 21, 2017 at 15:09

Phoenix404

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5 Comments

Phoenix404 Over a year ago

I am glad to help you.

RiggsFolly Over a year ago

Hope you didn't object to my adding a bit to your answer

Phoenix404 Over a year ago

@RiggsFolly No, I didn't. If you want to add more information feel free to add.

AlwaysStudent Over a year ago

@Phoenix404 I need a help. I wonder if I can ask for help from you?

Phoenix404 Over a year ago

yup sure... go ahead

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