Asked  7 Months ago    Answers:  5   Viewed   33 times

I want to manipulate a JavaScript array in PHP. Is it possible to do something like this?

$.ajax({
       type: "POST",
       url: "tourFinderFunctions.php",
       data: "activitiesArray="+activities,
       success: function() {
            $("#lengthQuestion").fadeOut('slow');
       }
    });

Activities is a single dimensional array like:

var activities = ['Location Zero', 'Location One', 'Location Two'];

The script does not complete when I try this... How can I fix it?

 Answers

58
data: { activitiesArray: activities },

That's it! Now you can access it in PHP:

<?php $myArray = $_REQUEST['activitiesArray']; ?>
Wednesday, March 31, 2021
 
SilverHorn
answered 7 Months ago
41

Got it!

To properly access the JavaScrtipt objects in PHP I need to JSON.stringify them when pushing on the array. Then, on PHP, json_decode them to a PHP object, and access their properties with the '->' operator.

The final solution is as follows:

<?php 
include 'ChromePhp.php';

if (isset($_POST['newUsers'])) {

    $newUsers = $_POST['newUsers'];

    foreach ($newUsers as $user) {
        # code...
        $usr = json_decode($user);
        ChromePhp::log("Nome: " . $usr->nome . " - Idade: " . $usr->idade);
    }

} else { ?>

<html>
<body>

    <script src="js/jquery-2.0.3.min.js"></script>
    <script type="text/javascript">
        //var newUsersObj = {};
        var newUsers = [];

        newUser = {};
        newUser['nome'] = 'alvaro';
        newUser['idade'] = '34';
        newUsers.push(JSON.stringify(newUser));

        newUser1 = {};
        newUser1['nome'] = 'bia';
        newUser1['idade'] = '7';
        newUsers.push(JSON.stringify(newUser1));

        newUser2 = {};
        newUser2['nome'] = 'alice';
        newUser2['idade'] = '2';
        newUsers.push(JSON.stringify(newUser2));

        $.ajax({
            url: "testcookie.php",
            type: "POST",
            data: {
                'newUsers[]': newUsers
            },
            success: function () {

            },
            error: function () {

            }
        });

    </script>
</body>
</html>
<?php } ?>
Saturday, May 29, 2021
 
xenon
answered 5 Months ago
49

To achieve this you can either do a synchronous ajax call like described in this answer, but that's something which is incredibly dangerous for the performance of your website.

Alternatively - and this is the right way - you should have an external variable whether the username is available, as soon as the user inputs something you do the request and if it's valid you change the variable otherwise you show an warning message. Next in your validateRegistration() function you only check the external variable (+ possible some form of callback, depending on where you call it from). The advantage being that the user can still continue doing things (like filling out the rest of the form) whilst the request is pending.

Saturday, May 29, 2021
 
jeremyharris
answered 5 Months ago
91

Most likely, your server limits the number of concurrent connections per user to 1. Or, you are using sessions and the first script has it locked. The second script will be blocked until the first one releases its lock on the session file. Only use session_start() if you need to, and release the lock with session_write_close() as soon as you are done with it.

Edit: I'm not sure if this will work, but you could try it. Each time you want to update the session, call session_start(), update the session, then call session_write_close(). I'm not sure if you are allowed to do that multiple times in a script, but it seems like it should work.

Saturday, May 29, 2021
 
Norgul
answered 5 Months ago
81

you problem that selector ('#services') takes only first input value. You should remove id and just serialize form as below.

If all you need to pass is all values from form you can use

data: $('form#my-form').serialize() // this code puts all of the inputs into passable and readable for PHP, way.

And then in $_POST['service'] will be an array of inputs values.

For example:

<form action="save.php" method="post" id="services">
    <input type="text" name="service[0]" value="1st Service" />
    <input type="text" name="service[1]" value="2nd Service" />
    <input type="text" name="service[2]" value="3rd Service" />
    <input type="text" name="service[..]" value=".. Service" />
    <input type="text" name="service[N]" value="N Service" />
</form>

In your JS:

$.post($('form#services').attr('action'), $('form#services').serialize(), function(response) {});

And then in save.php you can get an array in $_POST:

var_dump($_POST['service']);

Hope that's is exactly what you need.

Saturday, May 29, 2021
 
Domiik
answered 5 Months ago
Only authorized users can answer the question. Please sign in first, or register a free account.
Not the answer you're looking for? Browse other questions tagged :