输入字段未获取检查属性

Question

I have a form with an input field. If they click on a specific daypart I want the input field to be checked. I try to do that with the following code, but the field doesn't get the attribute checked when I check it.

<input type="checkbox" name="dayparts[]" value="<?php echo $daypart['id']?>" <?php if (!empty($_GET['dayparts'] == '1')){ echo 'checked';}?> >

This is the url when I check something.

index.php?page=activities&dayparts%5B%5D=1

Answer 1

<input type="checkbox" name="dayparts[]" value="<?php echo $daypart['id']?>" <?php if (!empty($_GET['dayparts'] == '1')){ echo 'checked';}?> >

I think above code have a problem .The problem is

<?php if (!empty($_GET['dayparts'] == '1')){ echo 'checked';}?>

This part .Please check you $GET['dayparts'] .But In url you pass dayparts%5B%5D. This is the problem .For this reason <?php if (!empty($_GET['dayparts'] == '1')){ echo 'checked';}?> is not check .And you get this error. Url will be

index.php?page=activities&dayparts=1