PHP封装的PDO数据库操作类实例

本文实例讲述了PHP封装的PDO数据库操作类。分享给大家供大家参考，具体如下：<?phpcla

本文实例讲述了PHP封装的PDO数据库操作类。分享给大家供大家参考，具体如下：

<?php
class DatabaseHandler {
 /**
 * sql语句查询
 */
 public static function query_data ($dataName,$sql,$query=array()) {
 $result = array();
 if (!empty($sql)) {
 $data = Bj_PdoDB::factory($dataName)->allPrepare($sql, $query);
 if (!$data->isEmpty()) {
 $result = $data->data;
 }
 }
 return $result;
 }
 /**
 * 查询数据
 */
 public static function select_data ($dataName,$tableName,$where,$param=array(),$desc='') {
 $result = array();
 $query = array();
 $query_str = '1=1';
 $tmp = '';
 $str_arr = '';
 if (!empty($param)) {
 $str = '';
 foreach ($param as $val) {
 $str .= '`'.$val.'`,';
 }
 $str = substr($str,0,-1);
 }
 $str_arr = !empty($str) ? $str : '*';
 if ( !empty($where) ) {
 foreach ($where as $key => $value) {
 $tmp .= ' AND '.$key.'=:'.$key.'';
 $query[':'.$key] = $value;
 }
 }
 $query_str .= $tmp;
 if (!empty($desc)) {
 $query_str .= $desc;
 }
 $sql = "SELECT {$str_arr} FROM `".$tableName."` WHERE {$query_str} ";
 $query_data = Bj_PdoDB::factory($dataName)->allPrepare($sql, $query);
 if ( !$query_data->isEmpty() ) {
 $result = $query_data->data;
 }
 return $result;
 }
 /**
 * 批量添加信息
 */
 public static function insert_data($dataName,$tableName,$add_param){
 $flag = false;
 if (!empty($add_param)) {
 $fileds = array();
 $str = '';
 foreach($add_param as $k=>$val){
 $str .= '(';
 $i = 0;
 foreach ($val as $key=>$vl) {
 $fileds[$i] = '`'.$key.'`';
 $str .= "'".addslashes($vl)."',";
 $i++;
 }
 $str = substr($str,0,-1);
 $str .= '),';
 }
 $filed_str = implode(',',$fileds);
 $val_str = substr($str,0,-1);
 $sql = "INSERT INTO `".$tableName."` ({$filed_str}) VALUES {$val_str}";
 $ret = Bj_PdoDB::factory($dataName)->insertPrepare($sql);
 if ( !$ret->isEmpty() ) {
 $insertId = $ret->data;
 if($insertId > 0){
 return $insertId;
 }
 }
 }
 return $flag;
 }
 /**
 * 删除数据
 */
 public static function delete_data ($dataName,$tableName,$id) {
 $query = array(':id' => $id);
 $sql = "DELETE FROM ". $tableName. " WHERE `id`=:id";
 $db_res = Bj_PdoDB::factory($dataName)->simplePrepare($sql,$query);
 return $db_res->data;
 }
 /**
 * 更新数据
 */
 public static function update_data ($dataName,$tableName,$id,$array) {
 $flag = false;
 if ( !empty($array) && !empty($id)) {
 $query = array(':id' => $id);
 $up_str = '';
 foreach($array as $key=>$val) {
 $query[':'.$key] = addslashes($val);
 $up_str .= '`'.$key.'`=:'.$key.',';
 }
 $up_str = substr($up_str,0,-1);
 $sql = "UPDATE `".$tableName."` SET ".$up_str." WHERE `id`=:id";
 $db_res = Bj_PdoDB::factory($dataName)->changePrepare($sql, $query);
 $flag = true;
 }
 return $flag;
 }
 /**
 * 事务
 */
 public static function transactionHandler($dataName,$type){
 switch ($type) {
 case 'begin':
 return Bj_PdoDB::factory($dataName)->beginTransaction();
 break;
 case 'commit':
 return Bj_PdoDb::factory($dataName)->commit();
 break;
 case 'rollback':
 return Bj_PdoDb::factory($dataName)->rollback();
 break;
 default :
 exit;
 }
 }
 /**
 * curl获取数据get
 */
 public static function curl_data ($curl_url){
 if (!empty($curl_url)) {
 $ch = curl_init();
 curl_setopt($ch, CURLOPT_URL, $curl_url);
 curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
 curl_setopt($ch, CURLOPT_HEADER, 0);
 $output = curl_exec($ch);
 curl_close($ch);
 return $output;
 }
 return false;
 }
 /**
 * curl提交数据
 */
 public static function curl_data_post ($ch_url,$param) {
 $result = array();
 if (!empty($ch_url) && !empty($param)) {
 $query_string = http_build_query($param);
 $ch = curl_init();
 curl_setopt($ch, CURLOPT_URL, $ch_url);
 curl_setopt($ch, CURLOPT_RETURNTRANSFER,1);
 curl_setopt($ch, CURLOPT_POST,1);
 curl_setopt($ch, CURLOPT_POSTFIELDS, $query_string);
 curl_setopt($ch, CURLOPT_HTTPHEADER,array("application/x-www-form-urlencoded; charset=UTF-8"));
 $output = curl_exec($ch);
 curl_close($ch);
 $result = !empty($output) ? json_decode($output,true) : array();
 }
 return $result;
 }
}