基于bootstrap 的datatable插件的使用（php版）
<?php("Content-type: text/html;");//防止乱码
//1、获取链接
$conn=@("localhost","root","");
if(!$conn){
//mysql_error()是返回mysql的上一次操作
die("连接失败".());
}else{
//echo '连接成功！<br/>';
}
//2、选择对应的数据库
@("etemsdb");
//3、设置操作编码（可有可无，建议有）
("set names utf8");//保证是按照utf8码操作的【utf8无-的，有-的是网页版的！！！！！！！】
$draw = $_GET['draw']; //第几次请求
//排序
$order_column = $_GET['order']['0']['column']; // 哪一列排序
$order_dir= $_GET['order']['0']['dir']; // ase desc 升序或者降序
//拼接排序sql
$orderSql = "";
if(isset($order_column)){
$i = ($order_column);
switch($i){
case 0;$orderSql = " order by teacher_id ".$order_dir;break;
case 1;$orderSql = " order by teacher_name ".$order_dir;break;
// case 2;$orderSql = " order by teacher_password ".$order_dir;break;
case 2;$orderSql = " order by teacher_email ".$order_dir;break;
case 3;$orderSql = " order by teacher_date ".$order_dir;break;
case 4;$orderSql = " order by teacher_note ".$order_dir;break;
default;$orderSql = '';
}
}
//分页
$start = $_GET['start'];//从多少开始
$length = $_GET['length'];//数据长度
$limitSql = '';
$limitFlag = isset($_GET['start']) && $length != -1 ;
if ($limitFlag ) {
$limitSql = " LIMIT ".($start).", ".($length);
}
//定义查询数据总记录数sql
$sumSql = "SELECT count(teacher_id) as sum FROM teacher";
//条件过滤后记录数 必要
$recordsFiltered = 0;
//表的总记录数 必要
$recordsTotal = 0;
$recordsTotalResult = ($sumSql,$conn);
while($row=($recordsTotalResult)){
$recordsTotal = $row['sum'];
}
//搜索//定义过滤条件查询过滤后的记录数sql
$search = $_GET['search']['value'];//获取前台传过来的过滤条件
// 每列搜索
$j = 1;
$search_arr =array();
$colSearchSql='';
for($j=0;$j<6;$j++){
$colSearchable = $_GET['columns'][$j]['searchable'];
$colSearchVal = $_GET['columns'][$j]['search']['value'];
if(($colSearchVal)>0 && $colSearchable == 'true' ){
switch ($j) {
case 0: $colSearchVal = "teacher_id LIKE '%".$colSearchVal."%'";
($search_arr,$colSearchVal);
break;
case 1: $colSearchVal = "teacher_name LIKE '%".$colSearchVal."%'";
($search_arr,$colSearchVal);
break;
case 2: $colSearchVal = "teacher_password LIKE '%".$colSearchVal."%'";
($search_arr,$colSearchVal);
break;
case 3: $colSearchVal = "teacher_email LIKE '%".$colSearchVal."%'";
($search_arr,$colSearchVal);
break;
case 4: $colSearchVal = "teacher_date LIKE '%".$colSearchVal."%'";
($search_arr,$colSearchVal);
break;
case 5: $colSearchVal = "teacher_note LIKE '%".$colSearchVal."%'";
($search_arr,$colSearchVal);
break;
default:
# code...
break;
}
}
}
if(empty($search_arr) == false){
$colSearchSql = " WHERE ".(" AND ",$search_arr);
}
// 综合搜索sql
// $zSearchSql =" where teacher_id || teacher_name || teacher_password || teacher_email || teacher_date || teacher_note LIKE '%".$search."%'";
$zSearchSql = " teacher_id LIKE '%".$search."%' OR teacher_name LIKE '%".$search."%' OR teacher_email LIKE '%".$search."%' OR teacher_date LIKE '%".$search."%' OR teacher_note LIKE '%".$search."%'";
// 拼接搜索SQL
$sumSearchSql = '';
if(($colSearchSql)>0 && ($search)>0){
$sumSearchSql = $colSearchSql." AND (".$zSearchSql.")";
}else if(($colSearchSql)>0 && ($search)==0){
$sumSearchSql = $colSearchSql;
}else if(($colSearchSql)==0 && ($search)>0){
$sumSearchSql = " WHERE ".$zSearchSql;
}else{
$sumSearchSql = '';
}
if(($sumSearchSql)>0){
$recordsFilteredResult = ($sumSql.$sumSearchSql);
while ($row = ($recordsFilteredResult)) {
$recordsFiltered =$row['sum'];
}
}else{
$recordsFiltered = $recordsTotal;
}
// query data
$sql='';
$totalResultSql = "SELECT * FROM teacher";
$infos = array();
// 拼接最终SQL
$sql=$totalResultSql.$sumSearchSql.$orderSql.$limitSql;
$dataResult = ($sql,$conn);
while ($row = ($dataResult)) {
// $obj = array($row['teacher_id'], $row['teacher_name'], $row['teacher_password'], $row['teacher_email'], $row['teacher_date'], $row['teacher_note']);
// array_push($infos,$obj);
($infos,$row);
}
// return data
echo json_encode(array(
"draw" => $draw,
"recordsTotal" =>$recordsTotal,// necessary
"recordsFiltered" =>$recordsFiltered, // necessary
"data" =>$infos // necessary
),JSON_UNESCAPED_UNICODE);
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