微型php框架 include/mysql.class.php
<?php
defined('ACC')||exit('Access Denied');
// 封装mysql操作类,包括连接功能,及查询功能.
class mysql extends absdb{
protected static $ins = null;
protected $host; // 主机名
protected $user; // 用户名
protected $passwd; // 密码
protected $db; // 数据库名
protected $port; // 端口
protected $conn = null;
// 在内部操作,获得一个对象
public static function getIns() {
if(self::$ins === null) {
self::$ins = new self();
}
$conf = conf::getIns();
self::$ins->host = $conf->host;
self::$ins->user = $conf->user;
self::$ins->passwd = $conf->pwd;
self::$ins->db = $conf->db;
self::$ins->port = $conf->port;
self::$ins->connect();
self::$ins->select_db();
self::$ins->setChar();
return self::$ins;
}
// 不让外部做new操作,
protected function __construct() {
}
// 连接数据库
public function connect() {
$this->conn = @mysql_connect($this->host,$this->user,$this->passwd,$this->port);
if(!$this->conn) {
$error = new Exception('数据库连不上',9);
throw $error;
}
}
// 发送sql查询
public function query($sql) {
$rs = mysql_query($sql,$this->conn);
if(!$rs) {
log::write($sql);
}
return $rs;
}
// 封装一个getAll方法
// 参数:$sql
// 返回: array,false
public function getAll($sql) {
$rs = $this->query($sql);
if(!$rs) {
return false;
}
$list = array();
while($row = mysql_fetch_assoc($rs)) {
$list[] = $row;
}
return $list;
}
// 封装一个getRow方法
// 参数:$sql
// 返回: array,false
public function getRow($sql) {
$rs = $this->query($sql);
if(!$rs) {
return false;
}
return mysql_fetch_assoc($rs);
}
// 封装一个getOne方法,
// 参数: $sql
// 返回: int,str(单一的值)
public function getOne($sql) {
$rs = $this->query($sql);
if(!$rs) {
return false;
}
$tmp = mysql_fetch_row($rs);
return $tmp[0];
}
// 选库函数
public function select_db() {
$sql = 'use ' . $this->db;
return $this->query($sql);
}
// 设置字符集的函数
public function setChar() {
$sql = 'set names utf8';
return $this->query($sql);
}
// 自动生成insert语句,update语句并执行
public function autoExecute($data,$table,$act='insert',$where='') {
if($act == 'insert') {
$sql = 'insert into ' . $table . ' (';
$sql .= implode(',',(array_keys($data)));
$sql .= ') values (\'';
$sql .= implode("','",array_values($data));
$sql .= "')";
} else if($act == 'update') {
if(!trim($where)) {
return false;
}
$sql = 'update ' . $table . ' set ';
foreach($data as $k=>$v) {
$sql .= $k;
$sql .= '=';
$sql .= "'".$v."',";
}
$sql = substr($sql,0,-1);
$sql .= ' where ';
$sql .= $where;
} else {
return false;
}
//return $sql;
return $this->query($sql);
}
}
/*
$db = mysql::getIns('localhost','root','111111','php0620');
print_r($db);
*/