ajax페이지를 임의로 만들었는데 개별페이지 접근막으려면 어떻게해야하나여? 채택완료

</p><p><?php</p><p>include_once('/common.php');</p><p><span style="font-family: 굴림, Gulim, 돋움, Dotum, Helvetica, sans-serif; line-height: 1.5;"> </span></p><p><span style="font-family: 굴림, Gulim, 돋움, Dotum, Helvetica, sans-serif; line-height: 1.5;">if($is_admin){</span></p><p><span style="font-family: 굴림, Gulim, 돋움, Dotum, Helvetica, sans-serif; line-height: 1.5;"> </span></p><p><span style="font-family: 굴림, Gulim, 돋움, Dotum, Helvetica, sans-serif; line-height: 1.5;">여기에는 ajax 파일 내용</span></p><p><span style="font-family: 굴림, Gulim, 돋움, Dotum, Helvetica, sans-serif; line-height: 1.5;"> </span></p><p><span style="font-family: 굴림, Gulim, 돋움, Dotum, Helvetica, sans-serif; line-height: 1.5;">}</span></p><p><span style="font-family: 굴림, Gulim, 돋움, Dotum, Helvetica, sans-serif; line-height: 1.5;">?></span></p><p>