漏刻有时php集合layui动态表格翻页和搜索的代码分析

搜索参数传递

1. 采用get方式，URL传递，主要考虑翻页page的传递；
2. 出于安全需要，对参数进行过滤；

		@$branch_id = get_param('branch_id');
		if ($branch_id == "") {
			$branch_id = $_COOKIE["branch_id"];
		}
		@$major_id = explode(',', get_param('major_name'))[0];
		@$pool_able = $_GET['pool_able'];
		if ($pool_able == ""){
		    $pool_able='0';
		}
		@$keys = get_param('keys');

翻页参数传递

1. 获取page参数，并格式化为十进制，判断为0是，自动为1；
2. 设置默认每页的数据数量变量$pagenum；
3. 设置偏移量$startI

		$page    = get_param('page');
		$page    = intval($page) == 0 ? 1 : intval($page);
		$pagenum = 30;
		$startI  = $page * $pagenum - $pagenum;

layui翻页格式传递

1. 总记录的计算:$count = count($row_c);
2. 搜索条件必须和主语句同步，否则总记录不准确，会导致翻页错乱；
3. code=0，msg=0，是layui的固定格式，不可缺少；

完整搜索和翻页代码

	//获取总记录;
	$sql_c = "select a.pool_id,a.member_id,a.branch_id,a.major_id,a.pool_address,a.pool_mask,a.pool_gateway,a.pool_able,b.major_id,b.major_name from " . $db->table('pool') . " AS a," . $db->table('category') . " AS b WHERE 1";
		$sql_c .= " AND a.major_id = b.major_id AND a.branch_id =" . $branch_id;
		if ($major_id != "") {
			$sql_c .= " AND a.major_id =" . $major_id;
		}
		if ($keys != "") {
			$sql_c .= " AND a.pool_address like '%" . $keys . "%'";
		}
		if ($pool_able != "") {
			$sql_c .= " AND a.pool_able =" . $pool_able;
		}
		$sql_c .= " ORDER BY a.pool_id ASC";
		$row_c = $db->queryall($sql);
		$count   = count($row_c);

		@$branch_id = get_param('branch_id');
		if ($branch_id == "") {
			$branch_id = $_COOKIE["branch_id"];
		}
		@$major_id = explode(',', get_param('major_name'))[0];
		@$pool_able = $_GET['pool_able'];
		if ($pool_able == ""){
		    $pool_able='0';
		}
		@$keys = get_param('keys');
		$page    = get_param('page');
		$page    = intval($page) == 0 ? 1 : intval($page);
		$pagenum = 30;
		$startI  = $page * $pagenum - $pagenum;
		
	//获取总记录;
	$sql_c = "select a.pool_id,a.member_id,a.branch_id,a.major_id,a.pool_address,a.pool_mask,a.pool_gateway,a.pool_able,b.major_id,b.major_name from " . $db->table('pool') . " AS a," . $db->table('category') . " AS b WHERE 1";
		$sql_c .= " AND a.major_id = b.major_id AND a.branch_id =" . $branch_id;
		if ($major_id != "") {
			$sql_c .= " AND a.major_id =" . $major_id;
		}
		if ($keys != "") {
			$sql_c .= " AND a.pool_address like '%" . $keys . "%'";
		}
		if ($pool_able != "") {
			$sql_c .= " AND a.pool_able =" . $pool_able;
		}
		$sql_c .= " ORDER BY a.pool_id ASC";
		$row_c = $db->queryall($sql);
		$count   = count($row_c);
		
		$pages   = getPages($count, $page, $pagenum);

		$sql = "select a.pool_id,a.member_id,a.branch_id,a.major_id,a.pool_address,a.pool_mask,a.pool_gateway,a.pool_able,b.major_id,b.major_name from " . $db->table('pool') . " AS a," . $db->table('category') . " AS b WHERE 1";
		$sql .= " AND a.major_id = b.major_id AND a.branch_id =" . $branch_id;
		if ($major_id != "") {
			$sql .= " AND a.major_id =" . $major_id;
		}
		if ($keys != "") {
			$sql .= " AND a.pool_address like '%" . $keys . "%'";
		}
		if ($pool_able != "") {
			$sql .= " AND a.pool_able =" . $pool_able;
		}
		$sql .= " ORDER BY a.pool_id ASC LIMIT " . $startI . ',' . $pagenumt;
		$row = $db->queryall($sql);

lockdatav Done!