php数据库操作以及连接数据库教程

<?php
include_once "mmysql.php";
$configArr = array('host'=>'localhost','port'=>'3306','user'=>'root','passwd'=>'root','dbname'=>'abcd');//这是连接数据库的操作
$mysql = new MMysql($configArr);
//插入的数值
$data = array(
    'sid'=>104,
    'aa'=>123456,
    'bbc'=>'aaaaaaaaaaaaaa',
);
$arr = $mysql->insert('t_table',$data);//插入执行

//判断执行是否成功
if($arr){
    echo "插入成功";
}else{
    echo "插入失败";
}

//查询
$res = $mysql->field(array('sid','aa','bbc'))
    ->order(array('sid'=>'desc','aa'=>'asc'))
    ->where(array('sid'=>"101",'aa'=>array('123455','>','or')))
    ->limit(1,2)
    ->select('t_table');
$res = $mysql->field('sid,aa,bbc')
    ->order('sid desc,aa asc')
    ->where('sid=101 or aa>123455')
    ->limit(1,2)
    ->select('t_table');

//获取最后执行的sql语句
$sql = $mysql->getLastSql();

//直接执行sql语句
$sql = "show tables";
$res = $mysql->doSql($sql);


//事务
$mysql->startTrans();
$mysql->where(array('sid'=>102))->update('t_table',array('aa'=>666666));
$mysql->where(array('sid'=>103))->update('t_table',array('bbc'=>'呵呵8888呵呵'));
$mysql->where(array('sid'=>104))->delete('t_table');
$mysql->commit();