Warning: mysqli_query() expects at least 2 parameters, 1 given in D:\wamp64\www\SET1\login.php on line...loginSQL = "select * from users where userName='$userName' and password='$password'"; $resultLogin = mysqli_query
$conn ) { die('连接失败: ' . mysqli_error($conn)); } mysqli_query($conn, "set names utf8"); mysqli_select_db...( $conn, 'RUNOOB' ); mysqli_query($conn, "SET AUTOCOMMIT=0"); // 设置为不自动提交，因为MYSQL默认立即执行 mysqli_begin_transaction...mysqli_query($conn, "insert into runoob_transaction_test (id) values(8)")) { mysqli_query($conn, "ROLLBACK...mysqli_query($conn, "insert into runoob_transaction_test (id) values(9)")) { mysqli_query($conn, "ROLLBACK
buy_num = 1;// 购买数量 //step2 查询商品信息 $sql = "select * from products where id={$product_id}"; $result = mysqli_query...sql = "INSERT INTO `order` (oid, product_id, number) values('$oid', '$product_id', '$number')"; mysqli_query...$content) { global $con; $sql = "INSERT INTO `order_log` (content) values('$content')"; mysqli_query...php db(); global $con; //step1 接收下单参数 $product_id = 1;// 商品ID $buy_num = 1;// 购买数量 mysqli_query($con...($con, "COMMIT");//事务提交即解锁 } else { echo "更新失败"; insertLog('库存减少失败'); mysqli_query
注入攻击 $new_url = str_replace('/', '', $u); // 替换短链接中的斜杠字符 } // 查询数据库中对应的长网址 $sql = mysqli_query...WHERE shorten_url = '{$new_url}'"); // 如果存在查询结果 if(mysqli_num_rows($sql) > 0){ $sql2 = mysqli_query...= ""){ $sql = mysqli_query($conn, "SELECT shorten_url FROM url WHERE shorten_url = '{...= '{$hidden_url}'"); if(mysqli_num_rows($sql) == 0){ $sql2 = mysqli_query...; }else{ $sql2 = mysqli_query($conn, "INSERT INTO url (full_url, shorten_url, clicks
1.3 操作数据 1.3.1 数据操作语句 通过mysqli_query()执行SQL语句 增、删、改语句执行成功返回true，失败返回false <?...,'root','data'); //2、设置支付编码 mysqli_set_charset($link,'utf8'); //3、执行SQL语句 //3.1 执行insert语句 /* $rs=mysqli_query...unix_timestamp())"); if($rs) echo '自动增长的编号是：'.mysqli_insert_id($link); */ //3.2 执行update语句 /* $rs=mysqli_query...($link,"delete from news where id=5"); 用到的函数 mysqli_query()：执行SQL语句 mysqli_insert_id()：获取插入记录自动增长的ID...($link,'set names utf8'); //3、执行查询语句 $rs=mysqli_query($link,'select * from news'); //var_dump($rs); /
; // mysqli_query() -- 执行sql命令 // set names utf-8 -- 写入数据库采用的编码(utf-8) mysqli_query($conn, 'set names...; // mysqli_query() -- 执行sql命令 // set names utf-8 -- 写入数据库采用的编码(utf-8) mysqli_query($conn, 'set names...; // mysqli_query() -- 执行sql命令 // set names utf-8 -- 写入数据库采用的编码(utf-8) mysqli_query($conn, 'set names...; // mysqli_query() -- 执行sql命令 // set names utf-8 -- 写入数据库采用的编码(utf-8) mysqli_query($conn, 'set names...; // mysqli_query() -- 执行sql命令 // set names utf-8 -- 写入数据库采用的编码(utf-8) mysqli_query($conn
注入攻击 $new_url = str_replace('/', '', $u); // 替换短链接中的斜杠字符 } // 查询数据库中对应的长网址 $sql = mysqli_query...WHERE shorten_url = '{$new_url}'"); // 如果存在查询结果 if(mysqli_num_rows($sql) > 0){ $sql2 = mysqli_query...= ""){ $sql = mysqli_query($conn, "SELECT shorten_url FROM url WHERE shorten_url = '{...; }else{ $sql2 = mysqli_query($conn, "INSERT INTO url (full_url, shorten_url, clicks...= ""){ $sql = mysqli_query($conn, "SELECT shorten_url FROM url WHERE shorten_url = '{
($conn, 'BEGIN'); $rs = mysqli_query($conn, 'SELECT num FROM goods WHERE id = 1'); $row = mysqli_fetch_array...($rs); $num = $row[0]; // 其他逻辑... // ... // 可用库存-1 mysqli_query($conn, 'UPDATE goods SET num = '....($conn, 'ROLLBACK'); } else { // 提交数据库逻辑 mysqli_query($conn, 'COMMIT'); } mysqli_close($conn)...($conn, 'BEGIN'); $rs = mysqli_query($conn, 'SELECT num FROM goods WHERE id = 1 FOR UPDATE'); if($rs...($rs); $num = $row[0]; // 其他逻辑... // ... // 可用库存-1 mysqli_query($conn, 'UPDATE goods SET num = '.
,{$pageSize}"; mysqli_query($conn,"SET NAMES UTF8"); $result=mysqli_query($conn,$sql);...$result); //获取数据总条数 $total_sql="SELECT COUNT(*)FROM page"; $total_result=mysqli_fetch_array(mysqli_query...mysqli_close($conn); $total_sql="SELECT COUNT(*)FROM page";获取数据，然后是 $total_result=mysqli_fetch_array(mysqli_query
sql = "insert into ih_log(event,type,usernma) values('$event','$type','$username')"; return mysqli_query..."update ih_store set number=number-{$number} where sku_id='$sku_id' and number>0"; $store_rs = mysqli_query...($conn,$sql); } //模拟下单操作 //库存是否大于0 mysqli_query($conn,"BEGIN"); //开始事务 $sql="select number from ih_store...where goods_id='$goods_id' and sku_id='$sku_id' FOR UPDATE";//此时这条记录被锁住,其它事务必须等待此次事务提交后才能执行 $rs=mysqli_query...($conn,$sql); if($store_rs){ echo '库存减少成功'; insertLog('库存减少成功'); mysqli_query
$conn){ echo "connect failed"; exit; } mysqli_select_db($conn,"ceshi"); mysqli_query($conn,"set...$conn){ echo "connect failed"; exit; } mysqli_select_db($conn,"ceshi"); mysqli_query($conn...($conn,$sql); if(mysqli_affected_rows($conn)){ insertLog('库存减少成功'); mysqli_query...$conn){ echo "connect failed"; exit; } mysqli_select_db($conn,"ceshi"); mysqli_query($conn...$conn){ echo "connect failed"; exit; } mysqli_select_db($conn,"ceshi"); mysqli_query($conn
用法 mysqli_query(connection,query,resultmode); 参数 用法 connection 必需。规定要使用的 MySQL 连接。 query 必需。.../连接失败会输出error+错误代码 die("error:".mysqli_connect_error()); } $coon-> close();//结束释放 实现登录认证 $sql = mysqli_query...where id = id and name='name';"); $rows=$sql->fetch_object();//将结果以对象方式传给$rows if($rows){ }else{ } 其他查询 mysqli_query...($coon,"INSERT INTO num VALUES ($max,0, $news);");//插入一条记录 $max = mysqli_query($coon,"SELECT * from num
$sql="insert into ih_log(event,type,usernma) values('$event','$type','$username')"; return mysqli_query...values('$order_sn','$user_id','$goods_id','$sku_id','$price','$username','$number')"; return mysqli_query.../库存是否大于0 $sql="select number from ih_store where goods_id='$goods_id' and sku_id='$sku_id' "; $rs=mysqli_query...ih_store set number=number-{ $number} where sku_id='$sku_id' and number>0"; $store_rs=mysqli_query...($conn,$sql); } //模拟下单操作 //库存是否大于0 mysqli_query($conn,"BEGIN"); //开始事务 $sql="select number from
= new mysqli("localhost","root","");//创建连接 //创建数据库 $sql="CREATE DATABASE testuser"; //数据库创建检测 // if(mysqli_query... //数据表创建 $sql="CREATE TABLE infos( id int, user varchar(10), pwd varchar(10))"; mysqli_query...($con,$sql); //新插入数据 $sql="insert into infos (id,user,pwd) values(125,'admin','test')"; mysqli_query
; // 获取表 $database = config('database.database'); mysqli_select_db($mysql_conn, $database); mysqli_query...($mysql_conn, 'SET NAMES utf8'); $table_result = mysqli_query($mysql_conn, 'show tables'); $tables =...$v['tableName'] . " "; $table_result = mysqli_query($mysql_conn, $sql); while ($t = mysqli_fetch_array...$t['Comment'] . "';"; mysqli_query($mysql_conn, $sql1); } } } mysqli_close($mysql_conn
MYISAM ; 2.用PHP读写数据库 在连接数据库之后 $connection = mysqli_connect($host_name, $host_user, $host_pass); 加入： mysqli_query...("set character set 'utf8'");//读库 mysqli_query("set names 'utf8'");//写库 就可以正常的读写MYSQL数据库了。...在写数据库连接文件时，写成： $conn = mysqli_connect("$host","$user","$password"); mysqli_query("SET NAMES 'UTF8'")...同样的，如果一开始写数据库连接文件时写成： mysqli_query("SET NAMES 'GBK'"); 那页面也要相应变成： <meta http-equiv="Content-Type" content
db_userpassword; $this- db_name=$db_name; $this- db_order=""; $this- db_limit=""; $this- db_getconn(); mysqli_query...$sql="select $typearr from $this- db_tablename $where $this- db_order $this- db_limit "; $result = mysqli_query...=$where; mysqli_query($this- db_conn,$sql); } public function db_delete($typestr,$valuestr){ //删除操作 $...sql="delete from $this- db_tablename WHERE $typestr=$valuestr"; mysqli_query($this- db_conn,$sql); }...")"; mysqli_query($this- db_conn,$sql); } public function __destruct(){ //析构方法关闭连接 mysqli_close($this
really want to drop the 'RUNOOB' database [y/N] y Database "RUNOOB" dropped ---- 使用PHP脚本删除数据库 PHP使用 mysqli_query...语法 mysqli_query(connection,query,resultmode); 参数 描述 connection 必需。规定要使用的 MySQL 连接。...可以是下列值中的任意一个： * MYSQLI_USE_RESULT（如果需要检索大量数据，请使用这个） * MYSQLI_STORE_RESULT（默认） 实例 以下实例演示了使用PHP mysqli_query...die('连接失败: ' . mysqli_error($conn)); } echo '连接成功'; $sql = 'DROP DATABASE RUNOOB'; $retval = mysqli_query
."');"; $result1=mysqli_query($conn,$sqlsel); $row=mysqli_fetch_array($result1); if($result1==0 || $...row == FALSE){ // 该ip没有对应的url,让他跳转第一个url $row1=mysqli_fetch_array(mysqli_query($conn,"SELECT url..."',2);"; mysqli_query($conn,$sqlins); echo $row1[0]; }else{ // 该ip已存在，把他应跳转的url给他。...并num+1 $result2=mysqli_query($conn,"SELECT url_no FROM t_url order by url_no desc limit 1");...$ip."';"; mysqli_query($conn,$sqlupd); echo $row[0]; } } mysqli_close($conn); ?
数字及下划线的组合，且用户名长度为 8 到 20 个字符之间： if (preg_match("/^\w{8,20}$/", $_GET['username'], $matches)) { $result = mysqli_query...输入异常"; } 让我们看下在没有过滤特殊字符时，出现的SQL情况： // 设定$name 中插入了我们不需要的SQL语句 $name = "Qadir'; DELETE FROM users;"; mysqli_query...在PHP中的 mysqli_query() 是不允许执行多个 SQL 语句的，但是在 SQLite 和 PostgreSQL 是可以同时执行多条SQL语句的，所以我们对这些用户的数据需要进行严格的验证。...get_magic_quotes_gpc()) { $name = stripslashes($name); } $name = mysqli_real_escape_string($conn, $name); mysqli_query...sub = addcslashes(mysqli_real_escape_string($conn, "%something_"), "%_"); // $sub == \%something\_ mysqli_query
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