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這篇文章將為大家詳細(xì)講解有關(guān)怎么在PHP中利用pdo實(shí)現(xiàn)一個(gè)數(shù)據(jù)庫(kù)操作類,文章內(nèi)容質(zhì)量較高,因此小編分享給大家做個(gè)參考,希望大家閱讀完這篇文章后對(duì)相關(guān)知識(shí)有一定的了解。
<?php class Pdodb{ 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(kù)連接*/ public function connect(){ try { $this->pdo= new PDO($this->Config['dsn'], $this->Config['username'], $this->Config['password']);//$dbh = new PDO('mysql:host=localhost;dbname=test', $user, $pass); $this->pdo->query("set names utf8"); }catch(Exception $e){ echo '數(shù)據(jù)庫(kù)連接失敗,詳情: ' . $e->getMessage () . ' 請(qǐng)?jiān)谂渲梦募袛?shù)據(jù)庫(kù)連接信息'; exit (); } /* if($this->Config['type']=='oracle'){ $this->pdo->query("set names {$this->Config['charset']};"); }else{ $this->pdo->query("set names {$this->Config['charset']};"); } */ //把結(jié)果序列化成stdClass //$this->pdo->setAttribute(PDO::ATTR_DEFAULT_FETCH_MODE, PDO::FETCH_OBJ); //自己寫(xiě)代碼捕獲Exception //$this->pdo->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION); $this->pdo->setAttribute(PDO::ATTR_DEFAULT_FETCH_MODE, PDO::FETCH_ASSOC);//屬性名 屬性值 數(shù)組以關(guān)聯(lián)數(shù)組返回 } /*數(shù)據(jù)庫(kù)關(guān)閉*/ public function close(){ $this->pdo = null; } //用于有記錄結(jié)果返回的操作,特別是SELECT操作 public function query($sql,$return=false){ $res = $this->pdo->query($sql); if($res){ $this->res = $res; // 未返回 return $this->res; } if($return){ return $res; } } //主要是針對(duì)沒(méi)有結(jié)果集合返回的操作,比如INSERT、UPDATE、DELETE等操作 public function exec($sql,$return=false){ $res = $this->pdo->exec($sql); if($res){ $this->res = $res; } if($return){//返回操作是否成功 成功返回1 失敗0 return $res; } } //將$this->res以數(shù)組返回(全部返回) public function fetchAll(){ return $this->res->fetchAll(); } //將$this->res以數(shù)組返回(一條記錄) public function fetch(){ return $this->res->fetch(); } //返回所有字段 public function fetchColumn(){ return $this->res->fetchColumn(); } //返回最后插入的id public function lastInsertId(){ return $this->res->lastInsertId(); } //返回最后插入的id public function lastInsertId2(){ return $this->pdo->lastInsertId(); } /** * 參數(shù)說(shuō)明 * string/array $table 數(shù)據(jù)庫(kù)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(kù)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 $sqlwhere 查詢條件,允許為空,兩種傳值模式 * 普通模式(必須加上and,$sqlwhere為空 1=1 正常查詢): * '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 *int $debug 是否開(kāi)啟調(diào)試,開(kāi)啟則輸出sql語(yǔ)句 * 0 不開(kāi)啟 * 1 開(kāi)啟 * 2 開(kāi)啟并終止程序 * int $mode 返回類型 * 0 返回多條記錄 * 1 返回單條記錄 * 2 返回行數(shù) */ public function select($table, $fields="*", $sqlwhere="", $orderby="", $debug=0, $mode=0){ //參數(shù)處理 if(is_array($table)){ $table = implode(', ', $table); } if(is_array($fields)){ $fields = implode(',',$fields); /* if($this->Config['type']=='oracle'){ //$fields = implode(',',$fields);//CUSTOMER_ID,FIRST_NAME,LAST_NAME,EMAIL //$fields = implode(",'UTF8','ZHS16GBK') ,convert(",$fields); //$fields="convert(".$fields.",'UTF8','ZHS16GBK')"; }else{ $fields = implode(',',$fields); } */ } if(is_array($sqlwhere)){ $sqlwhere = ' and '.implode(' and ', $sqlwhere); } //數(shù)據(jù)庫(kù)操作 if($debug === 0){ if($mode === 2){ //統(tǒng)計(jì) $this->query("select count(*) from $table where 1=1 $sqlwhere"); $return = $this->fetchColumn(); }else if($mode === 1){ //返回一條 $this->query("select $fields from $table where 1=1 $sqlwhere $orderby"); $return = $this->fetch(); }else{ $this->query("select $fields from $table where 1=1 $sqlwhere $orderby"); $return = $this->fetchAll();//如果 $this->res為空即sql語(yǔ)句錯(cuò)誤 會(huì)提示Call to a member function fetchAll() on a non-object } return $return; }else{ if($mode === 2){ echo "select count(*) from $table where 1=1 $sqlwhere"; }else if($mode === 1){ echo "select $fields from $table where 1=1 $sqlwhere $orderby"; }else{ echo "select $fields from $table where 1=1 $sqlwhere $orderby"; } if($debug === 2){ exit; } } } /** * 參數(shù)說(shuō)明 * string/array $table 數(shù)據(jù)庫(kù)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()') * int $debug 是否開(kāi)啟調(diào)試,開(kāi)啟則輸出sql語(yǔ)句 * 0 不開(kāi)啟 * 1 開(kāi)啟 * 2 開(kāi)啟并終止程序 * int $mode 返回類型 * 0 無(wú)返回信息 * 1 返回執(zhí)行條目數(shù) * 2 返回最后一次插入記錄的id */ public function oic_insert($table, $set, $debug=0, $mode=0){ //參數(shù)處理 if(is_array($table)){ $table = implode(', ', $table); } if(is_array($set)){ $s='';$i=0; foreach($set as $k=>$v){ $i++; $s[$i]=$k;//,連接 $val[$i]=$v; } $sarr=implode(",",$s);//去掉最后一個(gè), //array_pop($sarr); $set=implode("','",$val);////15221579236','張三','','2001','8','4','女','是 //$set = implode(', ', $set); } //數(shù)據(jù)庫(kù)操作 if($debug === 0){ if($mode === 2){ $this->query("insert into $table ($sarr) values('".$set."')"); //$return = $this->lastInsertId(); }else if($mode === 1){ $this->exec("insert into $table ($sarr) values('".$set."')"); $return = $this->res; }else{ $this->query("insert into $table ($sarr) values('".$set."')"); $return = NULL; } return $return; }else{ echo "insert into $table ($sarr) values('".$set."')"; if($debug === 2){ exit; } } } public function insert($table, $set, $debug=0, $mode=0){ //參數(shù)處理 if(is_array($table)){ $table = implode(', ', $table); } if(is_array($set)){ $s=''; foreach($set as $k=>$v){ $s.=$k."='".$v."',";//,連接 } $sarr=explode(',',$s);//去掉最后一個(gè), array_pop($sarr); $set=implode(',',$sarr); //$set = implode(', ', $set); } //數(shù)據(jù)庫(kù)操作 if($debug === 0){ if($mode === 2){ $this->query("insert into $table set $set"); $return = $this->pdo->lastInsertId(); }else if($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(shuō)明 * string $table 數(shù)據(jù)庫(kù)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%"') * int $debug 是否開(kāi)啟調(diào)試,開(kāi)啟則輸出sql語(yǔ)句 * 0 不開(kāi)啟 * 1 開(kāi)啟 * 2 開(kāi)啟并終止程序 * int $mode 返回類型 * 0 無(wú)返回信息 * 1 返回執(zhí)行條目數(shù) */ public function update($table, $set, $sqlwhere="", $debug=0, $mode=0){ //參數(shù)處理 if(is_array($table)){ $table = implode(', ', $table); } if(is_array($set)){ $s=''; foreach($set as $k=>$v){ $s.=$k."='".$v."',"; } $sarr=explode(',',$s);//去掉最后一個(gè), array_pop($sarr); $set=implode(',',$sarr); //$set = implode(', ', $set); } if(is_array($sqlwhere)){ $sqlwhere = ' and '.implode(' and ', $sqlwhere); } //數(shù)據(jù)庫(kù)操作 if($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 = true; } return $return; }else{ echo "update $table set $set where 1=1 $sqlwhere"; if($debug === 2){ exit; } } } /** * 參數(shù)說(shuō)明 * string $table 數(shù)據(jù)庫(kù)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%"') * int $debug 是否開(kāi)啟調(diào)試,開(kāi)啟則輸出sql語(yǔ)句 * 0 不開(kāi)啟 * 1 開(kāi)啟 * 2 開(kāi)啟并終止程序 * int $mode 返回類型 * 0 無(wú)返回信息 * 1 返回執(zhí)行條目數(shù) */ public function delete($table, $sqlwhere="", $debug=0, $mode=0){ //參數(shù)處理 if(is_array($sqlwhere)){ $sqlwhere = ' and '.implode(' and ', $sqlwhere); //是字符串需自己加上and } //數(shù)據(jù)庫(kù)操作 if($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; } } } } /* sqlserver 配置 extension=php_pdo_mssql.dll和extension=php_pdo_sqlsrv.dll 安裝對(duì)應(yīng)的 ntwdblib.dll http://msdn.microsoft.com/en-us/library/cc296170.aspx 下載php版本對(duì)應(yīng)的sqlsrv擴(kuò)展 sqlserver 配置 odbc連接需開(kāi)啟extension=php_pdo_odbc.dll */ $mssql2008_config=array( 'dsn'=>'odbc:Driver={SQL Server};Server=192.168.1.60;Database=his',//數(shù)據(jù)庫(kù)服務(wù)器地址 'username'=>'sa', 'password'=>'xxxxx', ); $mssql=new Pdodb($mssql2008_config); $sql="select * from ( select row_number()over(order by tempcolumn)temprownumber,* from ( select top 10 tempcolumn=0,a.* from DA_GR_HBFS a where 1=1 ) t ) tt where temprownumber>0"; $mssql->query($sql); while($res=$mssql->fetch()){ $data[]=$res; } print_r($data);exit; //mysql 操作 $msyql_config=array( 'dsn'=>'mysql:host=localhost;dbname=talk', 'username'=>'root', 'password'=>'123456' ); $mysql=new PDO_DB($msyql_config); $sql = 'SELECT user_id, user_name, nickname FROM et_users '; $mysql->query($sql); $data=$mysql->fetchAll(); print_r($data);exit; //oracle 操作 $oci_config=array( 'dsn'=>'oci:dbname=orcl', 'username'=>'BAOCRM', 'password'=>'BAOCRM' ); $oracle=new PDO_DB($oci_config); //print_r($oracle);exit;//PDO_DB Object ( [pdo:protected] => PDO Object ( ) [res:protected] => [config:protected] => [Config] => Array ( [dsn] => oci:dbname=orcl [name] => PWACRM [password] => PWACRM ) ) $sql="select * from CUSTOMER_LEVEL t"; $oracle->query($sql); $data=$oracle->fetchAll(); print_r($data);exit; /* Array ( [0] => Array ( [LEVEL_ID] => 1 [0] => 1 [LEVEL_NAME] => 普通會(huì)員 [1] => 普通會(huì)員 [LEVEL_DETAIL] => 普通會(huì)員 [2] => 普通會(huì)員 [SORT_NUMBER] => 15 [3] => 15 [CREATE_TIME] => 12-7月 -12 [4] => 12-7月 -12 [CREATE_BY] => 1 [5] => 1 [UPDATE_TIME] => 12-7月 -12 [6] => 12-7月 -12 [UPDATE_BY] => 1 [7] => 1 [STATE] => 正常 [8] => 正常 ) )*/ ?>
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