소스 코드가 이상하게 변질되어서 파일 기부[ No Bug 파일 완전판]

<?php 
$dbconn=mysqli_connect(~);
$block_per_page=10;  
$page_per_record=1;  
@$page=$_REQUEST['page'];
if( !intval($page) || $page == false || $page == null)  { $page=1; }
else {    $page=preg_replace('#[^0-9]#','',$_REQUEST['page']);}
$tab=preg_replace('/[^a-z0-9]/','',$_GET['tab']);

$count_check="select count(table_number) as total_pst from board where table_id like '$tab'";
$sql_query=mysqli_query($dbconn,$count_check);
$total_record=mysqli_fetch_assoc($sql_query);
$sql_cnt=stripslashes($total_record['total_pst']); 
$total_page=ceil($sql_cnt/ $page_per_record);  
$total_block=ceil($total_page / $block_per_page); 
$now_block=ceil($page/$block_per_page); 
$start_record=intval(($page -1) * $page_per_record); 
if($start_record < 1) { $start_record=0;}
else {$start_record=$start_record;}
$start_page=intval(($now_block -1) * $block_per_page)+1; 
$end_page=intval($start_page + $block_per_page)-1;
if($end_page >= $total_page) {$end_page == $total_page;} 

$info_sql="select * from board where table_id like '$tab' limit $start_record, $page_per_record";

$info_result = mysqli_query($dbconn,$info_sql);
while($tab_data=mysqli_fetch_assoc($info_result) ) {
}
----------------------
$next_page=$page+1;
$prev_page=$page-1;
----------------------
+-뻔할 단어니 그냥 1씩 더하고 빼고

if($page == 1 || $total_page <= 1)  {/*1page only*/}
if($page > 1 )  {
    if($page < $total_page) {}
    else if($page <= $total_page) {    
    echo "<span id=btn_span ><a href=?tab=$tab&page=1>[First]</a></span>";}
    else if(($page <= $total_page) && ($page <= 1)) {    }
    else {}
}
if($start_page <= $total_page){
if(($start_page <=1) ) {}
else{echo "<span id=btn_span><a href=?tab=$tab&page=$prev_page>[Prev]</a></span>";}}
for($i=$start_page;$i<=$end_page;$i++) {
    if($i > $total_page ) {}
    else if($i <= $total_page) {echo "<span id=btn_span><a href=?tab=$tab&page=$i>[$i]</a></span>";}
    else {}

} 
if(($next_page <$total_page) ) { echo "<span id=btn_span><a href=?tab=$tab&page=$next_page>[Next]</a></span>";}
else{}
if($total_page >$page) {echo "<span id=btn_span><a href=?tab=$tab&page=$total_page>[Last]</a></span>";}
else{}
?>