CODEWITHSUNDEEP
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jmcclane
jmcclane

Reputation: 189

JavaScript / jQuery multidimensional array (object) to php

I want to send a array to php with this structure:

Array[0]['name'] = ...
Array[0]['def'] = ...
Array[1]['name'] = ...
Array[1]['def'] = ...

and so on....

To do this I have a multidimensional array object like this:

var allShapes = new Array();
$('.shape_name').each(function(index){
    allShapes[index] = new Array();
    allShapes[index]['name']=$(this).val();

    allShapes[index]['def']=$(this).closest("tr").find('*[id*=shape_def_]').val();
});

I send it through a post request to php:

$.post("../some.php", {
    'shape_defs' : allShapes
}, function() {

    console.log(allShapes);

}, "json").success(function() {
   console.log("success");
});

How do I have to iterate through thos array in php? Something goes wrong there......

The Array which comes as $_POST (after json_decode) has the following content:

[{"name":"Ta","def":"somestring"},{"name":"WSCall","def":"somestring"},{"name":"manual","def":"somestring"}]

How do I iterate to get the values of the keys?

Upvotes: 1

Views: 963

Answers (2)

Paul S.
Paul S.

Reputation: 66304

A common misunderstanding when people move from PHP to JavaScript seems to be that they don't realise non-integer keys are not a standard part of Arrays in JavaScript. The reason the interpreter doesn't complain is because Array inherits Object and Object can use any String as a key.

If you try to Serialise a JavaScript Array with non-standard keys, you'll lose them entirely as they can't be written in the form of an Array literal.

Therefore, you should be creating Objects as the items of allShapes, not Arrays.

var allShapes = []; // array literal
$('.shape_name').each(function (index) {
    allShapes[index] = { // object literal
        'name': $(this).val(),
        'def': $(this).closest("tr").find('*[id*=shape_def_]').val()
    };
});

Finally, convert the structure to JSON using JSON.stringify

var allShapesJSON = JSON.stringify(allShapes);
// send allShapesJSON..

Upvotes: 3

Greg
Greg

Reputation: 2173

Serializing your array using JSON.stringify and then parsing it in PHP using json_decode should fix your problem. Complex data structures generally don't transfer well without encoding them.

Upvotes: 2

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