各位大大好
小弟目前遇到一個奇怪的現象
先上code

前端

$(document).on("change","[name='size_choice']",function () {
        var item_name = $(this).attr('data-name');
        $.ajax({
            url: "../ajax.php",
            method: "POST",
            data: {
                supply_size : $(this).val(),
                item_name : item_name,
                size_choice_chk : true,
            },
            dataType: "json",
            success: function (response) {
                console.log(response);
            },
            error: function(jqXHR, textStatus, errorThrown) {
                console.log(jqXHR + ' ' + textStatus + ' ' + errorThrown);
            },
        });
    })

後端

if (filter_input(INPUT_POST, 'size_choice_chk')) {
    $supply_size = filter_input(INPUT_POST, 'supply_size');
    $item_name = filter_input(INPUT_POST, 'item_name');

    $supply_sql = "select supply_price, supply_stock, supply_applylimit_qty, supply_return, supply_setempno, supply_qty 
                   from work_supply_datatbl w
                   inner join classtbl c using(class_no)
                   where w.data_stop = 'N' and c.data_stop = 'N' and w.supply_name = '$item_name' and w.supply_size = '$supply_size'";
    //$link是pdo連結 確定正常可連
    //fn_bind是自己寫的function(prepare + execute)
    $supply_query = $link->fn_bind($supply_sql);
    $supply = $supply_query->fetch(PDO::FETCH_ASSOC);
    
    $return_data_array = array(
        "supply_price"=>$supply['supply_price'],
        "supply_stock"=>$supply['supply_stock'],
        "supply_applylimit_qty"=>$supply['supply_applylimit_qty'],
        "supply_return"=>$supply['supply_return'],
        "supply_setempno"=>$supply['supply_setempno'],
        "supply_qty"=>$supply['supply_qty']
    );
    var_dump($return_data_array);

傳回資料
由於網頁會擋(要把單引號拿掉)

<pre>
Array
(
    [supply_price] => '&gt'
    [supply_stock] => '&gt'
    [supply_applylimit_qty] => '&gt'
    [supply_return] => '&gt'
    [supply_setempno] => '&gt' 90169
    [supply_qty] => '&gt'
)

</pre>

1.首先我想請問 為何會出現pre標籤?
2.再來就是 為什麼陣列的 > 會被替換掉 這我一直想不通 照理來說後端就應該成功存呈陣列了吧(要做json_encode當然更不行了QQ)