while mysql_fetch_array问题刚学PHP，有点疑问正常取出记录循环用whilewhile($num_rows=mysql_fetch_object($result)){ 输入字段内容等。。}就是上面的while后面的条件语句不是很明白。正常的while 后面肯定是跟一条件的表达式，如($i 不是很明白。有谁指点下。。。同样的语句还是mysql_fetch_array等。在线等------解决方案--------------------其实就相当于 while(NULL != ($num_rows=mysql_fetch_object($result))) ------解...
php mysql insert into while 意外终止PHP code $result = mysql_query("SELECT uid , pid , cateFROM upcm"); while($rows = mysql_fetch_row($result)) { $arry = explode($sepr,$rows[2],5); $query = "INSERT INTO upcn(uid,pid,cate1,cate2,cate3,cate4,cate5)VALUES($rows[0],$rows[1],$arry[0],$arry[1],$arry[2],$arry[3],$arry[4])"; $result1 = mysql_query($query); if(!$result1) { echo "fail"; } } mysql_fetch_row(...
php mysql insert into while 意外终止$result = mysql_query("SELECT uid , pid , cateFROM upcm"); while($rows = mysql_fetch_row($result)) { $arry = explode($sepr,$rows[2],5); $query = "INSERT INTO upcn(uid,pid,cate1,cate2,cate3,cate4,cate5)VALUES($rows[0],$rows[1],$arry[0],$arry[1],$arry[2],$arry[3],$arry[4])"; $result1 = mysql_query($query); if(!$result1) { echo "fail"; } }mysql_fetch_row($result)获...
提示我无标题文档include("conn/conn.php"); //包含conn.php文件 if (isset($_GET['page'])){$page=$_GET['page']; }else{$page=1; }?> if($page){$page_size=4; //每页显示4条记录$query="select * from tb_news"; //定义查询语句$result=mysql_query($query); //执行查询操作$message_count=mysql_num_rows($result); //获取查询总数$page_count=ceil($message_count/$page_size); //获取总的页数$offs...
为何用mysqli类时foreach只能取出一行，而while循环取出多行数据？我是新手，有个问题请帮忙，就是用mysqli类，数据表test中有5行数据，用foreach函数只能取出第一行，其他的都取不出来，而用while就可以取出5行，为何？$mysqlii=new mysqli("localhost","root","root","test");$sql="select * from user";$rs=$mysqlii->query($sql,MYSQLI_STORE_RESULT);foreach($rs->fetch_row() as $key=>$v2){ print_r( $v2); /...
关于PHP中的while跟sleep的mysql查询问题$sql="select * from table where id=1 ";$num = mysql_num_rows(_query($sql));while (true){ // $num2 = mysql_num_rows(_query($sql));//这个地方怎么写啊******* sleep(1) //若得到数据则马上返回数据给客服端，并结束本次请求 if(数据库有新记录){ alert(有新记录); exit(); } //服务器($_POST[time]*0.5)秒后...
php的mysql查询语句可不可以这样用呢？$query = "SELECT name FROM bank WHERE area LIKE 'aaa'"; $result = mysql_query($query) or die(mysql_error()); while($row = mysql_fetch_array($result)) {$http = $row['http'];$task_query = "SELECT * FROM task WHERE link LIKE'%$http%'";$task_result = mysql_query($task_query) or die(mysql_error());while($task = mysql_fetch_array($task_result));echo $task['high'].'';}...
我写的是从数据库中获取某个表的信息，信息有多行，我想转成json发送给客户端。 我并没有用到对象。$select2 = "select * from grouptable where groupid='$groupid'"; // echo $select2; $result2 = mysql_db_query($database, $select2); $i=0; while($row2=mysql_fetch_array($result2)){//echo "i=$i";echo $row2[0]." ";echo $row2[1]." ";echo $row2[2]." ";echo $row2[3]." ";// $result[$i][$index[0]]=$row2[0];// $resul...
loading shared libraries: libaio.so.1: cannot open shared object file: No such file or directory 检查是否安装libaiorpm -qa|grep libaio 若不存在，安装这个包即可yum install libaio-devel.x86_64 阿里云Centos7 安装mysql5.7 报错：./mysqld: error while loading shared libraries: libaio.so.1: cannot open shared object file: No such file or directory标签：阿里 dev color erro error info img ...
执行比较操作 ③DELIMITER || create procedure mypro() begin declare i integer; set i=1; start transaction; while i<=100 do beginend; end while; commit; end; || delimiter ; mysql中while循环以及变量声明以及dilimiter标签：本文系统来源：http://www.cnblogs.com/Jacck/p/4552780.html
[root@mysql5 dongbo]# ldconfig [root@mysql5 dongbo]# sysbench -vUnknown command: -v.Usage: sysbench [general-options]... --test=<test-name> [test-options]... commandGeneral options: --num-threads=N number of threads to use [1] --max-requests=N limit for total number of requests [10000] --max-time=N limit for total execution time in seconds [0] --forced-shutd...
root@example.com mysql]# scripts/mysql_install_db --datadir=/data/mydata --user=mysqlInstalling MySQL system tables..../bin/mysqld: error while loading shared libraries: libaio.so.1: cannot open shared object file: No such file or directoryInstallation of system tables failed! Examine the logs in/data/mydata for more information.You can try to start the mysqld daemon with: shell> ./bin/mysqld ...
1、while是满足条件才执行循环，repeat是满足条件退出循环；2、while在首次循环执行之前就判断条件，最少执行0次，repeat是在首次执行循环之后才判断条件，循环至少执行一次。 版权声明：本文为博主原创文章，未经博主允许不得转载。MySQL中的while循环和repeat循环的区别标签：mysql本文系统来源：http://blog.csdn.net/you23hai45/article/details/48574609
编译MariaDB中突然出现 “./bin/mysqld: error while loading shared libraries: libaio.so.1: cannot open shared object file: No such file or directory” 于是搜了搜终于解决了，正好来分享一下sudo apt-get install libaio1（参考文章：http://www.neatstudio.com/show-2360-1.shtml）MySQL&MariaDB出现error while loading shared libraries: libaio.so错误标签：本文系统来源：http://www.cnblogs.com/u2fsdgvkx1/p/554533...