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:

<?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;

}

}

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希望本文所述对大家PHP程序设计有所帮助。

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