Pass multiple php arrays in ajax request response

Question

I'm trying to pass multiple arrays in Ajax request response(get), but unfortunately I'm not able to get it done.

This is my php code I'm willing to send into Ajax request response:

echo json_encode($catdata);
echo json_encode($productdata);
echo json_encode($data);

My js ajax call is:

$.ajax({
    type: "post",
    url: "../api/test.php",
    contentType: "application/json; charset=utf-8",
    dataType: "json",
    success: function(data){
        var j=0;
        $.each(data,function(l,item){
            var arrlength = data[l].countdest;
            while(j<=arrlength)
            {
                (function(j)
                {
                    $('#catbtn').click(function(){
                        if(j<=arrlength)
                        {
                            $('#resultdiv').append('<p name="destinationid">'+data[j].destinationid+' '+data[j].name+'</p>');
                            var a;
                            for(a=0;a<4;a++)
                            {
                                alert(a);
                            }
                            //$('#resultdiv').append('<input type="checkbox" name="destinationid" value="'+data[j].destinationid+'" '+data[j].name+'/>');
                            j++;
                            if(j==arrlength)
                            {
                                $('#catbtn').hide();
                                $('#submit').show();
                            }
                        }
                    });
                }
                (j));
                i
            }
        });
        //alert(arrlength);
    },
});

Answer 1

  var formData = {
                    array1 : yourArray1,
                    array2 : yourArray2,
                    array3 : yourArray3
                };
  $.ajax({
       type:"POST",
       url: "trial2.php",
       data: formData,
       success: function(result) {
           console.debug(result);
       },

编辑，现在检查

Answer 2

尝试将它们全部发送到一个数组中：

echo json_encode(array($catdata, $productdata, $data));