<?php/** * PDO封裝類，目的是爲了使用起來更簡單方便 * modify Date: 2014-07-01 */class PDOX { private $pdo
= null; public $statement = null; public $options = array( PDO::MYSQL_ATTR_INIT_COMMAND => "SET NAMES ", ); public function __construct($dsn, $user = '', $pass = '', $persistent = false, $charset = "utf8"){ $this->options[PDO::MYSQL_ATTR_INIT_COMMAND] .= $charset; if($persistent){ $this->options[PDO::ATTR_PERSISTENT] = true; } $this->pdo = new PDO($dsn, $user, $pass, $this->options); } /** 全局屬性設置，包括：列名格式和錯誤提示類型 可以使用數字也能直接使用參數 */ public function setAttr($param, $val = ''){ if(is_array($param)){ foreach($param as $key => $val){ $this->pdo->setAttribute($key, $val); } }else{ if($val != '' ){ $this->pdo->setAttribute($param, $val); }else{ return false; } } } /** 生成一個編譯好的sql語句模版 你可以使用 ? :name 的形式 返回一個statement對象 */ public function prepare($sql){ if(empty($sql)){ return false; } $this->statement = $this->pdo->prepare($sql); return $this->statement; } /** 執行Sql語句，一般用於 增、刪、更新或者設置 返回影響的行數 */ public function exec($sql){ if(empty($sql)){ return false; } try{ return $this->pdo->exec($sql); }catch(Exception $e){ return $e->getMessage(); } } /** 執行有返回值的查詢，返回PDOStatement 可以通過鏈式操作，可以通過這個類封裝的操作獲取數據 */ public function query($sql){ if(empty($sql)){ return false; } $this->statement = $this->pdo->query($sql); return $this->statement; } /** 開啓事務 */ public function beginTransaction(){ return $this->pdo->beginTransaction(); } /** 提交事務 */ public function commit(){ return $this->pdo->commit(); } /** 事務回滾 */ public function rollBack(){ return $this->pdo->rollBack(); } public function lastInertId(){ return $this->pdo->lastInsertId(); } //** PDOStatement 類操作封裝 **// /** 讓模版執行SQL語句，1、執行編譯好的 2、在執行時編譯 */ public function execute($param = ""){ if(is_array($param)){ try{ return $this->statement->execute($param); }catch (Exception $e){ //return $this->errorInfo(); return $e->getMessage(); } }else{ try{ return $this->statement->execute(); }catch(Exception $e){ /* 返回的錯誤信息格式 [0] => 42S22 [1] => 1054 [2] => Unknown column 'col' in 'field list' return $this->errorInfo(); */ return $e->getMessage(); } } } /** 參數1說明： PDO::FETCH_BOTH
也是默認的，兩者都有（索引，關聯） PDO::FETCH_ASSOC
關聯數組 PDO::FETCH_NUM
索引 PDO::FETCH_OBJ
對象 PDO::FETCH_LAZY
對象 會附帶queryString查詢SQL語句 PDO::FETCH_BOUND
如果設置了bindColumn，則使用該參數 */ public function fetch($fetch_type = PDO::FETCH_ASSOC){ if(is_object($this->statement)){ return $this->statement->fetch($fetch_type); } return false; } /** 參數1說明： PDO::FETCH_BOTH
也是默認的，兩者都有（索引，關聯） PDO::FETCH_ASSOC
關聯數組 PDO::FETCH_NUM
索引 PDO::FETCH_OBJ
對象 PDO::FETCH_COLUMN
指定列 參數2可以指定要獲取的列 PDO::FETCH_CLASS
指定自己定義的類 PDO::FETCH_FUNC
自定義類 處理返回的數據 PDO_FETCH_BOUND
如果你需要設置bindColumn，則使用該參數 參數2說明： 給定要處理這個結果的類或函數 */ public function fetchAll($fetch_type = PDO::FETCH_ASSOC, $handle = ''){ if(empty($handle)){ return $this->statement->fetchAll($fetch_type); } return $this->statement->fetchAll($fetch_type, $handle); } /** 以對象形式返回 結果 跟fetch(PDO::FETCH_OBJ)一樣 */ public function fetchObject($class_name){ if(empty($clss_name)){ return $this->statement->fetchObject(); } return $this->statement->fetchObject($class_name); } public function fetchColumn($intColumn = 0){ return $this->statement->fetchColumn($intColumn); } /** public function bindColumn($array=array(),$type=EXTR_OVERWRITE){ if(count($array)>0){ extract($array,$type); } //$this->statement->bindColumn() } */ /** 以引用的方式綁定變量到佔位符(可以只執行一次prepare，執行多次bindParam達到重複使用的效果) */ public function bindParam($parameter, $variable, $data_type = 'STR', $length = 0){ switch ($data_type){ case 'STR': $data_type = PDO::PARAM_STR; break; case 'INT': $data_type = PDO::PARAM_INT; break; default : $data_type = ''; break; } return $this->statement->bindParam($parameter, $variable, $data_type, $length); } /** 返回statement記錄集的行數 */ public function rowCount(){ return $this->statement->rowCount(); } public function count(){ return $this->statement->rowCount(); } public function columnCount(){ $this->statement->execute(); return $this->statement->columnCount(); } public function getColumnMeta($intColumn){ return $this->statement->getColumnMeta($intColumn); } /** 關閉 */ public function close(){ return $this->statement->closeCursor(); } public function closeCursor(){ return $this->statement->closeCursor(); } /** 返回錯誤信息也包括錯誤號 */ private function errorInfo(){ return $this->statement->errorInfo(); } /** 返回錯誤號 */ private function errorCode(){ return $this->statement->errorCode(); } //簡化操作 public function insert($table, $data){ if(!is_array($data)){ return false; } $cols = array(); $vals = array(); foreach($data as $key => $val){ $cols[] = $key; $vals[] = "'" . $val . "'"; } $sql = "INSERT INTO {$table} ("; $sql .= implode(",", $cols) . ") VALUES ("; $sql .= implode(",", $vals) . ")"; return $this->exec($sql); } public function insertBind($table, $arrayData){ if(!is_array($arrayData)){ return false; } $vals = array_keys($arrayData); $cols = array(); /* $arrayobject = new ArrayObject( $arrayData ); $iterator
= $arrayobject->getIterator(); while($iterator->valid()) { $vals[] = ':' . $iterator->key() . ''; $iterator->next(); } */ $c
= implode('', $vals); $cols = array_filter(explode(':', $c)); $sql = "INSERT INTO {$table} ("; $sql .= implode(",", $cols) . ") VALUES ("; $sql .= implode(",", $vals) . ")"; $this->statement = $this->pdo->prepare($sql); $this->statement->execute($arrayData); return $this->statement->rowCount(); } public function update($table, $data, $where){ if(!is_array($data)){ return false; } $set = array(); foreach($data as $key => $val){ $set[] = $key . "='" . $val . "'"; } $sql = "UPDATE {$table} SET "; $sql .= implode(",", $set); $sql .= " WHERE " . $where; return $this->exec($sql); } public function updateBind($sql, $arrayWhere){ if(empty($sql) || !is_array($arrayWhere)){ return false; } $this->statement = $this->pdo->prepare($sql); $this->statement->execute($arrayWhere); return $this->statement->rowCount(); } public function delete($table, $where){ if(empty($table) || empty($where)){ return false; } $sql = "DELETE FROM {$table} WHERE " . $where; return $this->exec($sql); } public function deleteBind($sql, $arrayWhere){ if(empty($sql) || !is_array($arrayWhere)){ return false; } $this->statement = $this->pdo->prepare($sql); $this->statement->execute($arrayWhere); return $this->statement->rowCount(); }}?>