自己弄了个小项目 在本地localhost环境下没问题，但放到网络服务器就报错 ，网上查了下是 mysql_connect 已经被高版本php废弃了， 我只是个前端菜鸟 怎么改都报错 求前辈帮忙改一下 以下为项目包 sql文件也在里

header("Content-type: text/html;charset=utf-8");//防止乱码

//1、获取链接

$conn=@mysql_connect("localhost","root","0123456zp");

if(!$conn){

//mysql_error()是返回mysql的上一次操作

die("连接失败".mysql_error());

}else{

//echo '连接成功！
';

}

//2、选择对应的数据库

@mysql_select_db("caiwu");

//3、设置操作编码(可有可无，建议有)

mysql_query("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)){

$i = intval($order_column);

switch($i){

case 0;$orderSql = " order by id ".$order_dir;break;

case 1;$orderSql = " order by kh ".$order_dir;break;

case 2;$orderSql = " order by kj ".$order_dir;break;

case 3;$orderSql = " order by cpx ".$order_dir;break;

case 4;$orderSql = " order by zhd ".$order_dir;break;

case 5;$orderSql = " order by afzhd ".$order_dir;break;

case 6;$orderSql = " order by afxjd ".$order_dir;break;

case 7;$orderSql = " order by zxrq ".$order_dir;break;

case 8;$orderSql = " order by xs ".$order_dir;break;

case 9;$orderSql = " order by crrq ".$order_dir;break;

case 10;$orderSql = " order by skr ".$order_dir;break;

case 11;$orderSql = " order by skzh ".$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 ) {

$limitSql = " LIMIT ".intval($start).", ".intval($length);

}

//定义查询数据总记录数sql

$sumSql = "SELECT count(id) as sum FROM financialdata";

//条件过滤后记录数 必要

$recordsFiltered = 0;

//表的总记录数 必要

$recordsTotal = 0;

$recordsTotalResult = mysql_query($sumSql,$conn);

while($row=mysql_fetch_assoc($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(strlen($colSearchVal)>0 && $colSearchable == 'true' ){

switch ($j) {

case 0: $colSearchVal = "id LIKE '%".$colSearchVal."%'";

array_push($search_arr,$colSearchVal);

break;

case 1: $colSearchVal = "kh LIKE '%".$colSearchVal."%'";

array_push($search_arr,$colSearchVal);

break;

case 2: $colSearchVal = "kj LIKE '%".$colSearchVal."%'";

array_push($search_arr,$colSearchVal);

break;

case 3: $colSearchVal = "cpx LIKE '%".$colSearchVal."%'";

array_push($search_arr,$colSearchVal);

break;

case 4: $colSearchVal = "zhd LIKE '%".$colSearchVal."%'";

array_push($search_arr,$colSearchVal);

break;

case 5: $colSearchVal = "afzhd LIKE '%".$colSearchVal."%'";

array_push($search_arr,$colSearchVal);

break;

case 6: $colSearchVal = "afxjd LIKE '%".$colSearchVal."%'";

array_push($search_arr,$colSearchVal);

break;

case 7: $colSearchVal = "zxrq LIKE '%".$colSearchVal."%'";

array_push($search_arr,$colSearchVal);

break;

case 8: $colSearchVal = "xs LIKE '%".$colSearchVal."%'";

array_push($search_arr,$colSearchVal);

break;

case 9: $colSearchVal = "crrq LIKE '%".$colSearchVal."%'";

array_push($search_arr,$colSearchVal);

break;

case 10: $colSearchVal = "skr LIKE '%".$colSearchVal."%'";

array_push($search_arr,$colSearchVal);

break;

case 11: $colSearchVal = "skzh LIKE '%".$colSearchVal."%'";

array_push($search_arr,$colSearchVal);

break;

default:

# code...

break;

}

}

}

if(empty($search_arr) == false){

$colSearchSql = " WHERE ".implode(" AND ",$search_arr);

}

// 综合搜索sql

// $zSearchSql =" where teacher_id || teacher_name || teacher_password || teacher_email || teacher_date || teacher_note LIKE '%".$search."%'";

$zSearchSql = " id LIKE '%".$search."%' OR kh LIKE '%".$search."%' OR kj LIKE '%".$search."%' OR cpx LIKE '%".$search."%' OR zhd LIKE '%".$search."%' OR afzhd LIKE '%".$search."%'OR afxjd LIKE '%".$search."%'OR zxrq LIKE '%".$search."%'OR xs LIKE '%".$search."%'OR crrq LIKE '%".$search."%'OR skr LIKE '%".$search."%'OR skzh LIKE '%".$search."%'";

// 拼接搜索SQL

$sumSearchSql = '';

if(strlen($colSearchSql)>0 && strlen($search)>0){

$sumSearchSql = $colSearchSql." AND (".$zSearchSql.")";

}else if(strlen($colSearchSql)>0 && strlen($search)==0){

$sumSearchSql = $colSearchSql;

}else if(strlen($colSearchSql)==0 && strlen($search)>0){

$sumSearchSql = " WHERE ".$zSearchSql;

}else{

$sumSearchSql = '';

}

if(strlen($sumSearchSql)>0){

$recordsFilteredResult = mysql_query($sumSql.$sumSearchSql);

while ($row = mysql_fetch_assoc($recordsFilteredResult)) {

$recordsFiltered = $row['sum'];

}

}else{

$recordsFiltered = $recordsTotal;

}

// query data

$sql='';

$totalResultSql = "SELECT * FROM financialdata";

$infos = array();

// 拼接最终SQL

$sql=$totalResultSql.$sumSearchSql.$orderSql.$limitSql;

$dataResult = mysql_query($sql,$conn);

while ($row = mysql_fetch_assoc($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);

array_push($infos,$row);

}

// return data

echo json_encode(array(

"draw" => $draw,

"recordsTotal" =>$recordsTotal, // necessary

"recordsFiltered" =>$recordsFiltered, // necessary

"data" =>$infos // necessary

),JSON_UNESCAPED_UNICODE);