Sending an array to PHP function from javascript and reading its values

Question

I have a onclick and post function in jQuery where I pass two variables to my PHP function.

The functions look like following:

$(".pop-save-us").click(function(){
    console.log(checkbox_events);
    console.log(user_id);
  // alert("Button save pressed");
    $.post('/user/AddRemoveBrandUsers', { brands: JSON.stringify(checkbox_events),userId:user_id} , function(data) {
        if(checkbox_events.length==0)
        {
            alert("No changes were made.")
        }
        else {
            if (data == "ok") {
             alert("ok");
            }
        }
    });

});

The first value is an array in following format:

console.log(checkbox_events) gives a following output:

[2: "checked", 4: "checked", 5: "checked"]

I do `JSON.stringify(checkbox_events) to turn my array into JSON format and pass it to my PHP function like following:

 public function AddRemoveBrandUsersAction()
    {
        $brands = $this->getRequest()->getPost("brands");
        $userId = $this->getRequest()->getPost("userId");
        for($i=0;$i<count($brands);$i++)
        {
         // how can I now access each value of the brands array 
         // I need both key and value... How do I access them ??
        }
        die("ok");
    }

Okay can you reply in a form of answer so that I can accept ur answer.... And how do I get the "checked" value inside the loop ?? — perkes456
– perkes456, Commented Jun 8, 2016 at 10:36
What do you mean by "checked" value? If you are referring to a checkbox or radio, then the value / input is only sent if they are checked? — Epodax
– Epodax, Commented Jun 8, 2016 at 10:38
You dont check if its checked on PHP side, you only pass the checked value to server side. — DannyThunder
– DannyThunder, Commented Jun 8, 2016 at 10:38
yes thats what i ment danny... u can see that I have the "checked" stored in the array and then passed to PHP function. Question is, how can I access the: [2: "checked" << this value $key => $value is going to be =2 , but how to access the "checked" as well ?? — perkes456
– perkes456, Commented Jun 8, 2016 at 10:42

Rubén Amaro · Accepted Answer · 2016-06-08 10:44:58Z

1

use the code follows:

 if(!empty($brands) && sizeof($brands) > 0){
     foreach($brands as $key => $value){
         ...
     }
 }

answered Jun 8, 2016 at 10:44

Rubén Amaro

646 bronze badges

Sign up to request clarification or add additional context in comments.

4 Comments

perkes456 Over a year ago

Okay the $key is going to be the = 2 value... But how do i get the string value which is "checked" inside the loop? :)

Rubén Amaro Over a year ago

$value is 'checked' text

perkes456 Over a year ago

and $key is =2 ? :)

Rubén Amaro Over a year ago

exactly $key is 2 and $value is 'checked'

AlexM · Accepted Answer · 2016-06-08 10:52:27Z

0

You should use

json_decode(%your_string_with_json%)

function to get the internal php representation of your json string. Thus, you will be able to manipulate it (get data, set data). It's very useful to use debugger also.

$a = json_decode('{"foo": 123, "bar": null, "baz": "qwerty", "arr": ["hello", "world"]}', true);

Will give you and array, which you can easily use within your code:

array (
  'foo' => 123,
  'bar' => NULL,
  'baz' => 'qwerty',
  'arr' => 
  array (
    0 => 'hello',
    1 => 'world',
  ),
)

For example:

$b = $a['foo'] // b = 123
$b = $a['arr'][0] // b = hello

Then, you should watch the value you have received from the request, and depending on it, use if ... else ... and etc.

edited Jun 8, 2016 at 10:52

answered Jun 8, 2016 at 10:47

AlexM

1971 gold badge2 silver badges7 bronze badges

Collectives™ on Stack Overflow

Sending an array to PHP function from javascript and reading its values

2 Answers 2

4 Comments

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

2 Answers 2

4 Comments

Comments

Your Answer

Sign up or log in

Post as a guest

Related