在动态添加的字段中保留$_POST值

从动态添加的输入字段创建数组，我希望在用户单击按钮后保留输入字段中的值。

如果我使用if(isset($_POST['creategroup'])) echo $_POST['creategroup'];，它将显示整个数组。我希望这些值分别显示在各自的输入字段中。有什么好的解决办法吗?

<div class="row">
    <div class="col-xs-6">
        <input class="form-control" placeholder="Enter Group Name" type="text" name="group" required></input>
    </div>
</div>    
<div class="row">
    <br />
    <div class="col-xs-6">
        <input class="form-control" placeholder="Enter email address" type="email" name="email[]" value="" required></input>
    </div>
</div>    
</div>

$(document).ready(function() {
    var max_fields      = 10; //maximum input boxes allowed
    var wrapper         = $("#input_fields_wrap"); //Fields wrapper
    var add_button      = $("#add_field_button"); //Add button ID
    var x = 1; //initlal text box count
    $(add_button).click(function(e){ //on add input button click
        e.preventDefault();
        if(x < max_fields){ //max input box allowed
            x++; //text box increment
            $(wrapper).append('<div class="row"><div class="col-xs-6" style="margin-top:0.2cm;"><input type="email" class="form-control" placeholder="Enter another email address" name="email[]" required><a href="#" id="remove_field"><span class="glyphicon glyphicon-minus"></span></a></div></div>'); //add input box
        }
    });
    $(wrapper).on("click","#remove_field", function(e){ //user click on remove text
        e.preventDefault(); $(this).parent('div').remove(); x--;
    })
});