form提交 php获取

<form action="http://localhost/php01/post.php" method="post">
First name:<br>
<input type="text" name="firstname" value="Mickey">
<br>
Last name:<br>
<input type="text" name="lastname" value="Mouse">
<br><br>
<input type="submit" value="Submit">
</form>

 

点击提交

$(document).on('click','.aa',function(){
    $('#bb').submit();
})

 

$date = $_POST['firstname'];

$date = $_POST['lastname'];