所以，我有一个网站http://example.com，我有一个数据库的文章和什么没有，当文章ID是http://example.com/article，一切都很好，重写是正确的，但当ID是http://example.com/article-name我得到一个404.
这是代码：
.htaccess

RewriteEngine On
RewriteRule ^([a-zA-Z0-9]+)$ index.php?ID=$1
RewriteRule ^c/([^/]+)?$ index.php?CAT=$1 [L,QSA]
RewriteRule ^topic/([^/]+)?$ index.php?topic=$1 [L,QSA]

RewriteCond %{REQUEST_FILENAME} !-f
RewriteRule ^([^\.]+)$ $1.php [NC,L]

article.php

<?php
if (isset($_GET['ID'])) {
require_once 'con.php';
$ID = mysqli_real_escape_string($conn, $_GET['ID']);
$sql = "SELECT * FROM `blog_article` WHERE articleID = '$ID' ";
$result = mysqli_query($conn, $sql);
$row = mysqli_fetch_array($result);
if (mysqli_num_rows($result) == 0) {
    header("Location: /");
}
else{
    include 'article.php';
}
} 
elseif (isset($_GET['CAT'])) {
      include 'c.php'; 
} 

elseif (isset($_GET['topic'])) { 
    include 't.php'; 
  } 
else {
include 'index_view.php';
}
 ?>