对象的JavaScript数组分解为PHP数组

Question

After several hours of Picasso coding ( my term ), I am stuck on how to efficiently convert this JavaScript array of objects into PHP (sent via AJAX).

In JavaScript, the array of objects looks like this after JSON encoding:

[
    {"pid":"282","seller_id":"3","qty":"5"},
    {"pid":"284","sn":"1234","seller_id":2,"qty":"1"},
    {"pid":"284","sn":"2345","seller_id":2,"qty":"1"},
    {"pid":"284","sn":"3456","seller_id":2,"qty":"1"},
    {"pid":"111","sn":"987","seller_id":2,"qty":"1"}
]

There are two data groupings - note that the first transfer lacks a serial number and is to an external vendor, making it a sale. The next 4 are all to "myself" (user is seller_id: 2), so these are internal transfers of product.

Anyway, the two types must be handled differently, so it would be immensely helpful if they were in separate arrays.

Therefore, I wish to end up with two PHP arrays:

arrSale[0] = "pid":"282","seller_id":"3","qty":"5"

and

arrXfer[0] = "pid":"284","sn":"1234","seller_id":2,"qty":"1"
arrXfer[1] = "pid":"284","sn":"2345","seller_id":2,"qty":"1"
arrXfer[2] = "pid":"284","sn":"3456","seller_id":2,"qty":"1"
arrXfer[3] = "pid":"111","sn":"987","seller_id":2,"qty":"1"

I know that I must use $arrPHP = json_decode(jsonItems); to decode the JSON, but what happens to the objects? How would I break them into the two groups? I can't even find website resources that discuss this.

Answer 1

Try this

$JSON = '[
    {"pid":"282","seller_id":"3","qty":"5"},
    {"pid":"284","sn":"1234","seller_id":2,"qty":"1"},
    {"pid":"284","sn":"2345","seller_id":2,"qty":"1"},
    {"pid":"284","sn":"3456","seller_id":2,"qty":"1"},
    {"pid":"111","sn":"987","seller_id":2,"qty":"1"}
]';

$array = json_decode($JSON);

$arrSale = $arrXfer = array();

foreach($array as $obj)
    if(isset($obj->sn)) $arrXfer[] = (array)$obj;
        else $arrSale[] = (array)$obj;

print_r($arrSale);
print_r($arrXfer);

It gives us:

Array(
    [0] => Array([pid] => 282[seller_id] => 3[qty] => 5)
)

Array(
    [0] => Array([pid] => 284[sn] => 1234[seller_id] => 2[qty] => 1)
    [1] => Array([pid] => 284[sn] => 2345[seller_id] => 2[qty] => 1)  
    [2] => Array([pid] => 284[sn] => 3456[seller_id] => 2[qty] => 1)  
    [3] => Array([pid] => 111[sn] => 987[seller_id] => 2[qty] => 1)  
)