PHP Mysql数据库备份类程序总结

require_once("backdata.class.php");
$link = @mysql_connect("localhost","数据库名","密码") or die ('Could not connect to server.');
mysql_query("use cms",$link);
mysql_query("set names utf8",$link);

$dbbck = new backupData($link);//实例化它，只要一个链接标识就行了

//备份数据时，如想备份一个数据库中的所有表，你可这样写：
$dbbck->backupTables("cms","./",array('*'));

//备份数据时，如想备份一个数据库中的仅一个表时，你可这样写：
$dbbck->backupTables("cms","./",array('user'));

//备份数据时，如想备份一个数据库中的多个表时，你可这样写：
$dbbck->backupTables("cms","./",array('user','acl','informatoin'));

//注解：$dbbck->backupTables("参1","参2",array());中，

<?php
/*
*
*一个简单的Mysql备份数据类
*
*/
class backupData{
    private    $mysql_link;//链接标识
    private    $dbName;    //数据库名
    private    $dataDir;     //数据所要存放的目录
    private    $tableNames;//表名

    public function __construct($mysql_link){
         $this->mysql_link = $mysql_link;
    }
    public function backupTables($dbName,$dataDir,$tableNames){//开始备份
        $this->dbName  = $dbName;
        $this->dataDir  = $dataDir;
        $this->tableNames = $tableNames;
        $tables=$this->delarray($this->tableNames);
        $sqls='';
        foreach($tables as $tablename){
            if($tablename==''){//表不存在时
                continue;
            }
           
            //************************以下是形成SQL的前半部分**************
            //如果存在表，就先删除
            $sqls .= "DROP TABLE IF EXISTS $tablename;n";
            //读取表结构
            $rs = mysql_query("SHOW CREATE TABLE $tablename",$this->mysql_link); 
            $row=mysql_fetch_row($rs);
            //获得表结构组成SQL
            $sqls.=$row['1'].";nn";
            unset($rs);
            unset($row);
           
            //************************以下是形成SQL的后半部分**************
            //查寻出表中的所有数据
            $rs=mysql_query("select * from $tablename",$this->mysql_link);
            //表的字段个数
            $field=mysql_num_fields($rs);
            //形成此种SQL语句:"INSERT INTO `groups` VALUES('1499e0ca25988d','主任','','0');"
            while($rows=mysql_fetch_row($rs)){
                $comma='';//逗号
                $sqls.="INSERT INTO `$tablename` VALUES(";
                for($i=0;$i<$field;$i++){
                    $sqls.=$comma."'".$rows[$i]."'";
                    $comma=',';
                }
                $sqls.=");nnn";
            }
        }
        $backfilepath=$this->dataDir.date("Ymdhis",time()).'.sql';
       
        //写入文件
        $filehandle = fopen($backfilepath, "w");
        fwrite($filehandle, $sqls);
        fclose($filehandle);
    }
    private function delarray($array){    //处理传入进来的数组
        foreach($array as $tables){
            if($tables=='*'){    //所有的表(获得表名时不能按常规方式来组成一个数组)
                $newtables=mysql_list_tables($this->dbName,$this->mysql_link);
                $tableList = array();
                for ($i = 0; $i < mysql_numrows($newtables); $i++){
                    array_push($tableList,mysql_tablename($newtables, $i));
                }
                $tableList=$tableList;
            }else{
                $tableList=$array;
                break;
            }
        }
        return $tableList;
    }
}
?>

  select * from tablename order by rand() limit 1 

$query= "SELECT count(*) as count FROM recommends";
....
$max_num = $row['count']; // 取记录总数
srand((double)microtime()*1000000); // 随机数种子
$se_pos = rand(0, $max_num); // 随机数范围
$length = 6; // 记录条数
if (($max_num - $se_pos) <= $length) {
    $se_pos = $max_num - $se_pos; // 记录数不足6条的情况
}

$query = "SELECT * FROM recommendsn limit ".$se_pos.",".$length;

<?php

$db = mysql_connect("localhost", "root");

mysql_select_db("xyj",$db);

$result=mysql_query("SELECT * FROM obj",$db);

$max_num=mysql_num_rows($result);//取得数据库的记录数

srand((double)microtime()*10000000); //生成随机数种子。

$se_pos=rand(0, $max_num-1); //从0到最大记录数取随机数

$length=30; //设定共取多少条记录

//下面是取出指定数目的记录。

$result_lim=mysql_query("select * from obj limit $se_pos,$length",$db);

$myrow_lim=mysql_fetch_array($result_lim);

printf("%sn", $se_pos);//显示随机得到的记录号

printf("%sn", $myrow_lim["name"]);//显示随机得到的记录的name字段

$rs0 = $pdo->exec($sql);
$pre = $pdo->prepare($sql);
$rs1 = $pre->execute();

define('DB_NAME','test');
define('DB_USER','test');
define('DB_PASSWD','test');
define('DB_HOST','localhost');
define('DB_TYPE','mysql');
$dbh = new PDO(DB_TYPE.':host='.DB_HOST.';dbname='.DB_NAME, DB_USER, DB_PASSWD);

$sql = 'select * from test';
foreach ( $dbh->query($sql) as $value)
{
    echo $value[col];
};

$sth = $dbh->prepare('update db set zh_CN= :str where SN=:SN');
$sth->bindParam(':str',$str,PDO::PARAM_STR,12);
$sth->bindParam(':SN',$SN);
$sth->execute();

$sth = $dbh->prepare('insert into db ("zh_CN","zh_TW")values(:str , :SN');
foreach ($array => $value )
{
 $sth->bindParam(':str',$value[str],PDO::PARAM_STR,12);
 $sth->bindParam(':SN',$value[SN]);
 $sth->execute();
}

$sth = $dbh->prepare('select * from db where SN = :SN');
$sth->bindParam(':SN',$value[SN]);
$sth->execute();
while($meta = $sth->fetch(PDO::FETCH_ASSOC))
{
 echo $meta["name"];
}

$sth = $dbh->prepare('select * from db where SN = :SN');
$sth->bindParam(':SN',$value[SN]);
$sth->execute();
if ($sth->errorCode())
{
 echo "有错误！有错误！";
 print_r($sth->errorInfo());
}

<?php
//国内的PNR码连接
$hostname="127.0.0.1"; //MSSQL服务器的IP地址 或 服务器的名字
$dbuser="sa"; //MSSQL服务器的帐号
$dbpasswd="sa"; //MSSQL服务器的密码
$dbname="aa"; //数据库的名字

$conn = mssql_connect($hostname,$dbuser,$dbpasswd); //连接MSSQL
mssql_select_db($dbname); /*连接要访问的数据库 这里也可以写做 $db=mssql_select_db($dbname,$conn); */
$sql =
"select * from Sheet1$"; //sql语句
$data = mssql_query($sql); //把查询的值集合在变量$data
while($Arr = mssql_fetch_object($data)) //循环初始的集合$Arr

{
$Airport=$Arr->Airport;
$citycode=$Arr->citycode;
$Chinesecityname=$Arr->Chinesecityname;
$Chinesecityjp=$Arr->Chinesecityjp;
$english=$Arr->english;
$countrycode=$Arr->countrycode;
$countryfullname=$Arr->countryfullname;
$Chauname=$Arr->Chauname;
//echo $code;
$conn=mysql_connect("localhost","root","123456");//连接数据库的帐号和端口号
mysql_query("SET NAMES ‘GBK’",$conn);
mysql_select_db("taojipiao2009",$conn);// 加载数据库
//$sql="update internationcode set jp=’$aa’ where Code=’$Code’";
$sql="insert into internationcode(Airport,citycode,Chinesecityname,Chinesecityjp,english,countrycode,countryfullname,Chauname) values(‘$Airport‘,’$citycode‘,’$Chinesecityname‘,’$Chinesecityjp‘,’$english‘,’$countrycode‘,’$countryfullname‘,’$Chauname‘)";
//echo $sql."<br>";
$result=mysql_query($sql);
}
//mssql_close($conn); //关闭数据库

?>

<?php

$mssql_link = mssql_connect($db_host,$db_msuser,$db_mspass) or
die("mssql数据库连接失败");

mssql_select_db($db_msname,$mssql_link);

$mysql_link = mysql_connect($db_myhost,$db_myuser,$db_mypass) or die("mysql数据库连接失败".mysql_error());

mysql_select_db($db_myname,$mysql_link);

$msquery = mssql_query("select top 1 * from buyok_produc",$mssql_link);

$vars = ”;
$vals = ”;
$cols = ”;

while ($row = mssql_fetch_array($msquery,$mssql_link)){
    $vals = ”;
    foreach($row as $key=>$values){
        $cols .= ($cols == ” ? $key : ‘,‘.$key);
        $vals .= ($vals == ” ? ‘’‘.$values.‘’,‘ : ‘’‘.$values.‘’,‘);
        //echo $vals;
    }
    $vars .= ($vars == ” ? ‘(‘.$vals.‘)‘ : ‘,(‘.$vals.‘)‘);
}

$sql =
"insert into `buyok_produc` ($cols) values $vars";

echo $sql;

$aa=mysql_query($sql, $mysql_link);

if ($aa){
    echo "successfully";
}else{
    echo "failed";
}

?>

//$array为txt文件explode出来的数组，每一个为一个电话号码, $str为类型
for($i=0; $i<count($array); $i++)
    {
        $tmpstr = "'". $array[$i] ."','". $str ."'";
        $sql="INSERT INTO ".$usertable." (tel,type) VALUES (".$tmpstr.")";
        mysql_query($sql);
    }

$sql2="INSERT INTO ".$usertable." (tel,type,updatetime) VALUES";
for($i=0; $i<count($array); $i++)
    {
        $tmpstr = "'". $array[$i] ."','". $str ."'";
 $sql2 .= "(".$tmpstr."),";
    }
$sql2 = substr($sql2,0,-1);   //去除最后的逗号
mysql_query($sql2);