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Update problemset.php
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优化翻页问题
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@Andy-qinyuhai
Andy-qinyuhai committed Oct 3, 2023
1 parent d221a86 commit 690f80f
Showing 1 changed file with 38 additions and 53 deletions.
91 changes: 38 additions & 53 deletions trunk/web/problemset.php
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Original file line number Diff line number Diff line change
Expand Up @@ -12,6 +12,7 @@
$view_title = "Problem Set";

//remember page
/*
$page = "1";
if (isset($_GET['page'])) {
$page = intval($_GET['page']);
Expand All @@ -35,25 +36,21 @@
if (!is_numeric($page) || $page<=0)
$page = '1';
}
*/
//end of remember page

//Page Setting
$sql = "select count(`problem_id`) as upid FROM `problem` WHERE `defunct`='N'";
if(isset($_GET['page'])) $page = intval($_GET['page']);
else $page = 1;
$page_cnt = 50; //50 problems per page
$result = mysql_query_cache($sql);
$row = $result[0];
$cnt = $row['upid'] / $page_cnt;
if ($row['upid'] % $page_cnt == 0) $cnt = $cnt-1;
if ($page > $cnt+1 && ! isset($_SESSION[$OJ_NAME.'_administrator']) ) $page = $cnt+1 ;
$pstart = $page_cnt*intval($page)-$page_cnt+1; //start 1
$pend = $pstart+$page_cnt;

$postfix="";
$filter_sql = "";
$limit_sql = "";
if (isset($_GET['search']) && trim($_GET['search'])!="") {
$search = "%".($_GET['search'])."%";
$filter_sql = " ( title like ? or source like ?)";
$filter_sql .= " and A.ROWNUM >='" . strval($pstart) . "' AND A.ROWNUM < '". strval($pend) . "' ";
//$pstart = 0;
//$pend = 100;
$limit_sql = " LIMIT ".($page-1)*$page_cnt.",".$page_cnt;
$postfix="&search=".urlencode($_GET['search']);
}else if (isset($_GET['list']) && trim($_GET['list']!="")){
$plist= explode(",",$_GET['list']);
Expand All @@ -63,56 +60,39 @@
$pids.=",$pid";
}
$filter_sql = " problem_id in ($pids) order by FIELD(problem_id,$pids)"; // 如果希望按难度顺序改成 order by accepted desc ;
$pstart = 0;
$pend = 100;
//echo $filter_sql ;
$limit_sql = " LIMIT ".($page-1)*$page_cnt.",".$page_cnt;

}else {
//$filter_sql = " `problem_id`>='".strval($pstart)."' AND `problem_id`<'".strval($pend)."' ";
$filter_sql = "A.ROWNUM >='" . strval($pstart) . "' AND A.ROWNUM < '". strval($pend) . "' ";
}else if(isset($_GET['my'])){
$filter_sql = " 1";
$limit_sql = " LIMIT ".($page-1)*$page_cnt.",".$page_cnt;
}
else {
$filter_sql = " 1";
$limit_sql = " LIMIT ".($page-1)*$page_cnt.",".$page_cnt;
}

//all submit
$sub_arr = Array();
//all acc
$sub_arr = Array();
$acc_arr = Array();
if (isset($_SESSION[$OJ_NAME.'_'.'user_id'])){
$sql = "SELECT distinct `problem_id` FROM `solution` WHERE `user_id`=? ";
if(isset($pids)&&$pids!="") $sql.=" and problem_id in ($pids)";
$result = pdo_query($sql,$_SESSION[$OJ_NAME.'_'.'user_id']);
foreach ($result as $row)
$sub_arr[$row[0]] = true;
}

//all ac
$acc_arr=Array();
if (isset($_SESSION[$OJ_NAME.'_'.'user_id'])) {
$sql = "SELECT distinct `problem_id` FROM `solution` WHERE `user_id`=? AND `result`=4 ";
if(isset($pids)&&$pids!="") $sql.=" and problem_id in ($pids)";
$result = pdo_query($sql,$_SESSION[$OJ_NAME.'_'.'user_id']);
foreach ($result as $row)
$acc_arr[$row[0]] = true;
$sql = "SELECT `problem_id`,`result` FROM `solution` WHERE `user_id`=? ";
$result = pdo_query($sql,$_SESSION[$OJ_NAME.'_'.'user_id']);
foreach ($result as $row){
$sub_arr[$row['problem_id']] = true;
if($row['result'] == 4) $acc_arr[$row['problem_id']] = true;
}
}

// Problem Page Navigator
//if($OJ_SAE) $first=1;
if ($OJ_FREE_PRACTICE){ // open free practice without limit of contest using
$sql = "SELECT count(problem_id) as upid FROM `problem` WHERE defunct='N' ";
$result = mysql_query_cache($sql);
$row = $result[0];
$cnt = $row['upid'] / $page_cnt;
if ($row['upid'] % $page_cnt == 0) $cnt = $cnt-1;
$sql = "SELECT * FROM (SELECT @ROWNUM := @ROWNUM + 1 AS ROWNUM, `problem_id`,`title`,`source`,`submit`,`accepted`,defunct FROM (select * from `problem` WHERE `defunct`='N' order by problem_id) problem, (SELECT @ROWNUM := 0) TEMP ORDER BY `problem_id`) A WHERE defunct='N' and $filter_sql";

$limit = "";
if ($OJ_FREE_PRACTICE){ // open free practice without limit of contest using
$sql = "SELECT * FROM (SELECT @ROWNUM := @ROWNUM + 1 AS ROWNUM, `problem_id`,`title`,`source`,`submit`,`accepted`,defunct FROM (select * from `problem` WHERE `defunct`='N' order by problem_id) problem, (SELECT @ROWNUM := 0) TEMP ORDER BY `problem_id`) A WHERE defunct='N' and $filter_sql";
$limit = $sql.$limit_sql;
}else if (isset($_SESSION[$OJ_NAME.'_'.'administrator'])) { //all problems
// Reset Page Count
$sql = "select count(`problem_id`) as upid FROM `problem`";
$result = mysql_query_cache($sql);
$row = $result[0];
$cnt = $row['upid'] / $page_cnt;

if ($row['upid'] % $page_cnt == 0) $cnt = $cnt-1;

$sql = "SELECT * FROM (SELECT @ROWNUM := @ROWNUM + 1 AS ROWNUM, `problem_id`,`title`,`source`,`submit`,`accepted`,defunct FROM (select * from `problem` order by problem_id) problem, (SELECT @ROWNUM := 0) TEMP ORDER BY `problem_id`) A WHERE $filter_sql";

$limit = $sql.$limit_sql;
}else { //page problems (not include in contests period)
$now = strftime("%Y-%m-%d %H:%M",time());
$sql = "SELECT * FROM (SELECT @ROWNUM := @ROWNUM + 1 AS ROWNUM, `problem_id`,`title`,`source`,`submit`,`accepted`,defunct " .
Expand All @@ -124,18 +104,23 @@
" AND (c.`defunct` = 'N' AND '$now'<c.`end_time`)" . // option style show all non-running contest
//"and (c.`end_time` > '$now' OR c.private =1)" . // original style , hidden all private contest problems
") ORDER BY `problem_id` ) A WHERE $filter_sql";
$limit = $sql.$limit_sql;
}
// End Page Setting
pdo_query("SET sort_buffer_size = 1024*1024"); // Out of sort memory, consider increasing server sort buffer size
//echo htmlentities( $sql);
if (isset($_GET['search']) && trim($_GET['search'])!="") {
$result = pdo_query($sql,$search,$search);
$total = pdo_query($sql,$search,$search);
$cnt = count($total) / $page_cnt;
$result = pdo_query($limit,$search,$search);
}
else {
$result = mysql_query_cache($sql);
$total = mysql_query_cache($sql);
$cnt = count($total) / $page_cnt;
$result = mysql_query_cache($limit);
}

$view_total_page = intval($cnt+1);
$view_total_page = ceil($cnt*1.0);

$cnt = 0;
$view_problemset = Array();
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