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mysql select db 废弃_php 项目放服务器显示mysql_connect 已经废弃？

發(fā)布時間：2025/3/20 数据库 27 豆豆

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小弟前端菜鳥一枚在做一個小項目時

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

//1、獲取鏈接

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

if(!$conn){

//mysql_error()是返回mysql的上一次操作

die("連接失敗".mysql_error());

}else{

//echo '連接成功！
';

}

//2、選擇對應(yīng)的數(shù)據(jù)庫

@mysql_select_db("caiwu");

//3、設(shè)置操作編碼(可有可無，建議有)

mysql_query("set names utf8");//保證是按照utf8碼操作的【utf8無-的，有-的是網(wǎng)頁版的！！！！！！！】

$draw = $_GET['draw']; //第幾次請求

//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 = '';

}

//分頁

$start = $_GET['start'];//從多少開始

$length = $_GET['length'];//數(shù)據(jù)長度

$limitSql = '';

$limitFlag = isset($_GET['start']) && $length != -1 ;

if ($limitFlag ) {

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

}

//定義查詢數(shù)據(jù)總記錄數(shù)sql

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

//條件過濾后記錄數(shù) 必要

$recordsFiltered = 0;

//表的總記錄數(shù) 必要

$recordsTotal = 0;

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

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

$recordsTotal = $row['sum'];

}

//搜索//定義過濾條件查詢過濾后的記錄數(shù)sql

$search = $_GET['search']['value'];//獲取前臺傳過來的過濾條件

// 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."%'";