/**
* 作者：胡睿
* 日期：2012/07/21
* 電郵：hooray0905@foxmail.com
*/

class HRDB{
protected $pdo;
protected $res;
protected $config;

/*構(gòu)造函數(shù)*/
function __construct($config){
$this->Config = $config;
$this->connect();
}

/*數(shù)據(jù)庫連接*/
public function connect(){
$this->pdo = new PDO($this->Config['dsn'], $this->Config['name'], $this->Config['password']);
$this->pdo->query('set names utf8;');
//把結(jié)果序列化成stdClass
//$this->pdo->setAttribute(PDO::ATTR_DEFAULT_FETCH_MODE, PDO::FETCH_OBJ);
//自己寫代碼捕獲Exception
$this->pdo->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
}

/*數(shù)據(jù)庫關(guān)閉*/
public function close(){
$this->pdo = null;
}

public function query($sql){
$res = $this->pdo->query($sql);
if($res){
$this->res = $res;
}
}
public function exec($sql){
$res = $this->pdo->exec($sql);
if($res){
$this->res = $res;
}
}
public function fetchAll(){
return $this->res->fetchAll();
}
public function fetch(){
return $this->res->fetch();
}
public function fetchColumn(){
return $this->res->fetchColumn();
}
public function lastInsertId(){
return $this->res->lastInsertId();
}

/**
* 參數(shù)說明
* int $debug 是否開啟調(diào)試，開啟則輸出sql語句
* 0 不開啟
* 1 開啟
* 2 開啟并終止程序
* int $mode 返回類型
* 0 返回多條記錄
* 1 返回單條記錄
* 2 返回行數(shù)
* string/array $table 數(shù)據(jù)庫表，兩種傳值模式
* 普通模式：
* 'tb_member, tb_money'
* 數(shù)組模式：
* array('tb_member', 'tb_money')
* string/array $fields 需要查詢的數(shù)據(jù)庫字段，允許為空，默認(rèn)為查找全部，兩種傳值模式
* 普通模式：
* 'username, password'
* 數(shù)組模式：
* array('username', 'password')
* string/array $sqlwhere 查詢條件，允許為空，兩種傳值模式
* 普通模式：
* 'and type = 1 and username like "%os%"'
* 數(shù)組模式：
* array('type = 1', 'username like "%os%"')
* string $orderby 排序，默認(rèn)為id倒序
*/
public function select($debug, $mode, $table, $fields="*", $sqlwhere="", $orderby="tbid desc"){
//參數(shù)處理
if(is_array($table)){
$table = implode(', ', $table);
}
if(is_array($fields)){
$fields = implode(', ', $fields);
}
if(is_array($sqlwhere)){
$sqlwhere = ' and '.implode(' and ', $sqlwhere);
}
//數(shù)據(jù)庫操作
if($debug === 0){
if($mode === 2){
$this->query("select count(tbid) from $table where 1=1 $sqlwhere");
$return = $this->fetchColumn();
}else if($mode === 1){
$this->query("select $fields from $table where 1=1 $sqlwhere order by $orderby");
$return = $this->fetch();
}else{
$this->query("select $fields from $table where 1=1 $sqlwhere order by $orderby");
$return = $this->fetchAll();
}
return $return;
}else{
if($mode === 2){
echo "select count(tbid) from $table where 1=1 $sqlwhere";
}else if($mode === 1){
echo "select $fields from $table where 1=1 $sqlwhere order by $orderby";
}
else{
echo "select $fields from $table where 1=1 $sqlwhere order by $orderby";
}
if($debug === 2){
exit;
}
}
}

/**
* 參數(shù)說明
* int $debug 是否開啟調(diào)試，開啟則輸出sql語句
* 0 不開啟
* 1 開啟
* 2 開啟并終止程序
* int $mode 返回類型
* 0 無返回信息
* 1 返回執(zhí)行條目數(shù)
* 2 返回最后一次插入記錄的id
* string/array $table 數(shù)據(jù)庫表，兩種傳值模式
* 普通模式：
* 'tb_member, tb_money'
* 數(shù)組模式：
* array('tb_member', 'tb_money')
* string/array $set 需要插入的字段及內(nèi)容，兩種傳值模式
* 普通模式：
* 'username = "test", type = 1, dt = now()'
* 數(shù)組模式：
* array('username = "test"', 'type = 1', 'dt = now()')
*/
public function insert($debug, $mode, $table, $set){
//參數(shù)處理
if(is_array($table)){
$table = implode(', ', $table);
}
if(is_array($set)){
$set = implode(', ', $set);
}
//數(shù)據(jù)庫操作
if($debug === 0){
if($mode === 2){
$this->query("insert into $table set $set");
$return = $this->lastInsertId();
}else if($mode === 1){
$this->exec("insert into $table set $set");
$return = $this->res;
}else{
$this->query("insert into $table set $set");
$return = NULL;
}
return $return;
}else{
echo "insert into $table set $set";
if($debug === 2){
exit;
}
}
}

/**
* 參數(shù)說明
* int $debug 是否開啟調(diào)試，開啟則輸出sql語句
* 0 不開啟
* 1 開啟
* 2 開啟并終止程序
* int $mode 返回類型
* 0 無返回信息
* 1 返回執(zhí)行條目數(shù)
* string $table 數(shù)據(jù)庫表，兩種傳值模式
* 普通模式：
* 'tb_member, tb_money'
* 數(shù)組模式：
* array('tb_member', 'tb_money')
* string/array $set 需要更新的字段及內(nèi)容，兩種傳值模式
* 普通模式：
* 'username = "test", type = 1, dt = now()'
* 數(shù)組模式：
* array('username = "test"', 'type = 1', 'dt = now()')
* string/array $sqlwhere 修改條件，允許為空，兩種傳值模式
* 普通模式：
* 'and type = 1 and username like "%os%"'
* 數(shù)組模式：
* array('type = 1', 'username like "%os%"')
*/
public function update($debug, $mode, $table, $set, $sqlwhere=""){
//參數(shù)處理
if(is_array($table)){
$table = implode(', ', $table);
}
if(is_array($set)){
$set = implode(', ', $set);
}
if(is_array($sqlwhere)){
$sqlwhere = ' and '.implode(' and ', $sqlwhere);
}
//數(shù)據(jù)庫操作
if($debug === 0){
if($mode === 1){
$this->exec("update $table set $set where 1=1 $sqlwhere");
$return = $this->res;
}else{
$this->query("update $table set $set where 1=1 $sqlwhere");
$return = NULL;
}
return $return;
}else{
echo "update $table set $set where 1=1 $sqlwhere";
if($debug === 2){
exit;
}
}
}

/**
* 參數(shù)說明
* int $debug 是否開啟調(diào)試，開啟則輸出sql語句
* 0 不開啟
* 1 開啟
* 2 開啟并終止程序
* int $mode 返回類型
* 0 無返回信息
* 1 返回執(zhí)行條目數(shù)
* string $table 數(shù)據(jù)庫表
* string/array $sqlwhere 刪除條件，允許為空，兩種傳值模式
* 普通模式：
* 'and type = 1 and username like "%os%"'
* 數(shù)組模式：
* array('type = 1', 'username like "%os%"')
*/
public function delete($debug, $mode, $table, $sqlwhere=""){
//參數(shù)處理
if(is_array($sqlwhere)){
$sqlwhere = ' and '.implode(' and ', $sqlwhere);
}
//數(shù)據(jù)庫操作
if($debug === 0){
if($mode === 1){
$this->exec("delete from $table where 1=1 $sqlwhere");
$return = $this->res;
}else{
$this->query("delete from $table where 1=1 $sqlwhere");
$return = NULL;
}
return $return;
}else{
echo "delete from $table where 1=1 $sqlwhere";
if($debug === 2){
exit;
}
}
}
}

insert into tb_member (username, type, dt) values ('test', 1, now())

insert into tb_member set username = "test", type = 1, lastlogindt = now()

delete from tb_member where 1=1 and tbid = 1 and username = "hooray"

$where = array(
'tbid = 1',
'username = "hooray"'
);
$db->delete(1, 0, 'tb_member', $where);

$set = array('username = "123"', 'type = 1', 'lastlogindt = now()');
$where = array('tbid = 1');
$db->update(1, 0, 'tb_member', $set, $where);

$db->query('select username, password from tb_member');
$rs = $db->fetchAll();

$db_hoorayos_config = array(
'dsn'=>'mysql:host=localhost;dbname=hoorayos',
'name'=>'root',
'password'=>'hooray'
);
$db = new HRDB($db_hoorayos_config);

$db_hoorayos_config2 = array(
'dsn'=>'mysql:host=localhost;dbname=hoorayos2',
'name'=>'root',
'password'=>'hooray'
);
$db2 = new HRDB($db_hoorayos_config2);

require_once('global.php');
require_once('inc/setting.inc.php');

$db = new HRDB($db_hoorayos_config);

echo '

---

select測試

---

';
echo '普通模式，直接字符串傳入
';
$rs = $db->select(1, 0, 'tb_member', 'username, password', 'and type = 1 and username like "%os%"');
echo '
數(shù)組模式，可傳入數(shù)組
';
$fields = array('username', 'password');
$where = array('type = 1', 'username like "%os%"');
$rs = $db->select(1, 0, 'tb_member', $fields, $where);

echo '

---

insert測試

---

';
echo '普通模式，直接字符串傳入
';
$db->insert(1, 0, 'tb_member', 'username = "test", type = 1, lastlogindt = now()');
echo '
數(shù)組模式，可傳入數(shù)組
';
$set = array('username = "test"', 'type = 1', 'lastlogindt = now()');
$db->insert(1, 0, 'tb_member', $set);

echo '

---

update測試

---

';
echo '普通模式，直接字符串傳入
';
$db->update(1, 0, 'tb_member', 'username = "123", type = 1, lastlogindt = now()', 'and tbid = 7');
echo '
數(shù)組模式，可傳入數(shù)組
';
$set = array('username = "123"', 'type = 1', 'lastlogindt = now()');
$where = array('tbid = 1');
$db->update(1, 0, 'tb_member', $set, $where);

echo '

---

delete測試

---

';
echo '普通模式，直接字符串傳入
';
$db->delete(1, 0, 'tb_member', 'and tbid = 1 and username = "hooray"');
echo '
數(shù)組模式，可傳入數(shù)組
';
$where = array(
'tbid = 1',
'username = "hooray"'
);
$db->delete(1, 0, 'tb_member', $where);

echo '

---

自定義sql

---

';
$db->query('select username, password from tb_member');
$rs = $db->fetchAll();
var_dump($rs);

$db->close();