php基于PDO实现功能强大的MYSQL封装类实例

　　本文实例讲述了php基于PDO实现功能强大的MYSQL封装类。分享给大家供大家参考，具体如下：

　　 class CPdo{ protected $_dsn = mysql:host=localhost;dbname=test; protected $_name = root; protected $_pass = ; protected $_condition = array(); protected $pdo; protected $fetchAll; protected $query; protected $result; protected $num; protected $mode; protected $prepare; protected $row; protected $fetchAction; protected $beginTransaction; protected $rollback; protected $commit; protected $char; private static $get_mode; private static $get_fetch_action; /** *pdo construct */ public function __construct($pconnect = false) { $this->_condition = array(PDO::ATTR_PERSISTENT => $pconnect); $this->pdo_connect(); } /** *pdo connect */ private function pdo_connect() { try{ $this->pdo = new PDO($this->_dsn,$this->_name,$this->_pass,$this->_condition); } catch(Exception $e) { return $this->setExceptionError($e->getMessage(), $e->getline, $e->getFile); } } /** *self sql get value action */ public function getValueBySelfCreateSql($sql, $fetchAction = assoc,$mode = null) { $this->fetchAction = $this->fetchAction($fetchAction); $this->result = $this->setAttribute($sql, $this->fetchAction, $mode); $this->AllValue = $this->result->fetchAll(); return $this->AllValue; } /** *select condition can query */ private function setAttribute($sql, $fetchAction, $mode) { $this->mode = self::getMode($mode); $this->fetchAction = self::fetchAction($fetchAction); $this->pdo->setAttribute(PDO::ATTR_CASE, $this->mode); $this->query = $this->base_query($sql); $this->query->setFetchMode($this->fetchAction); return $this->query; } /** *get mode action */ private static function getMode($get_style){ switch($get_style) { case null: self::$get_mode = PDO::CASE_NATURAL; break; case true: self::$get_mode = PDO::CASE_UPPER; break; case false; self::$get_mode= PDO::CASE_LOWER; break; } return self::$get_mode; } /** *fetch value action */ private static function fetchAction($fetchAction) { switch($fetchAction) { case assoc: self::$get_fetch_action = PDO::FETCH_ASSOC; //asso array break; case num: self::$get_fetch_action = PDO::FETCH_NUM; //num array break; case object: self::$get_fetch_action = PDO::FETCH_OBJ; //object array break; case both: self::$get_fetch_action = PDO::FETCH_BOTH; //assoc array and num array break; default: self::$get_fetch_action = PDO::FETCH_ASSOC; break; } return self::$get_fetch_action; } /** *get total num action */ public function rowCount($sql) { $this->result = $this->base_query($sql); $this->num = $this->result->rowCount(); return $this->num; } /* *simple query and easy query action */ public function query($table, $column = *,$condition = array(), $group = ,$order = , $having = , $startSet = ,$endSet = ,$fetchAction = assoc,$params = null){ $sql = select .$column. from `.$table.` ; if ($condition != null) { foreach($condition as $key=>$value) { $where .= $key = $value and ; } $sql .= where $where; $sql .= 1 = 1 ; } if ($group != ) { $sql .= group by .$group. ; } if ($order != ) { $sql .= order by .$order. ; } if ($having != ) { $sql .= having $having ; } if ($startSet != && $endSet != && is_numeric($endSet) && is_numeric($startSet)) { $sql .= limit $startSet,$endSet; } $this->result = $this->getValueBySelfCreateSql($sql, $fetchAction, $params); return $this->result; } /** *execute delete update insert and so on action */ public function exec($sql) { $this->result = $this->pdo->exec($sql); $substr = substr($sql, 0 ,6); if ($this->result) { return $this->successful($substr); } else { return $this->fail($substr); } } /** *prepare action */ public function prepare($sql) { $this->prepare = $this->pdo->prepare($sql); $this->setChars(); $this->prepare->execute(); while($this->rowz = $this->prepare->fetch()) { return $this->row; } } /** *USE transaction */ public function transaction($sql) { $this->begin(); $this->result = $this->pdo->exec($sql); if ($this->result) { $this->commit(); } else { $this->rollback(); } } /** *start transaction */ private function begin() { $this->beginTransaction = $this->pdo->beginTransaction(); return $this->beginTransaction; } /** *commit transaction */ private function commit() { $this->commit = $this->pdo->commit(); return $this->commit; } /** *rollback transaction */ private function rollback() { $this->rollback = $this->pdo->rollback(); return $this->rollback; } /** *base query */ private function base_query($sql) { $this->setChars(); $this->query = $this->pdo->query($sql); return $this->query; } /** *set chars */ private function setChars() { $this->char = $this->pdo->query(SET NAMES UTF8); return $this->char; } /** *process sucessful action */ private function successful($params){ return The .$params. action is successful; } /** *process fail action */ private function fail($params){ return The .$params. action is fail; } /** *process exception action */ private function setExceptionError($getMessage, $getLine ,$getFile) { echo Error message is .$getMessage.<br /> The Error in .$getLine. line <br /> This file dir on .$getFile; exit(); } }

　　更多关于PHP相关内容感兴趣的读者可查看本站专题：《PHP基于pdo操作数据库技巧总结》、《php+Oracle数据库程序设计技巧总结》、《PHP+MongoDB数据库操作技巧大全》、《php面向对象程序设计入门教程》、《php字符串(string)用法总结》、《php+mysql数据库操作入门教程》及《php常见数据库操作技巧汇总》

　　希望本文所述对大家PHP程序设计有所帮助。