yaf框架封装简单的pdo类

<?php
/**

• Created by PhpStorm.
• User: Administrator
• Date: 2017/7/24

• Time: 14:03
  */
  /*
  　 数据库PDO操作
  　*/
  class pdo {
  private function Link(){
  $config=Yaf_Application::app()->getConfig();
  try{
  $PDO=new PDO($config['mysql']['dsn'],$config['mysql']['user'],$config['mysql']['pass']);
  return $PDO;
  }
  catch (Exception $e){
  echo $e->getMessage();
  }
  }
  //查询单条数据
  public function quOne($sql,$term=''){
  $PDO=$this->Link();
  try{
  $stmt = $PDO->prepare($sql);
  if(!empty($term)){
  foreach ($term as $key=>$value){
  $stmt->bindParam($key, $value, PDO::PARAM_STR);
  }
  }
  $stmt->execute();
  return $stmt->fetch(PDO::FETCH_ASSOC);
  } // if there is a problem we can handle it here
  catch (Exception $e) {
  echo $e->getMessage();
  }
  }
  //查询所有数据
  public function quAll($sql,$term=''){
  $PDO=$this->Link();
  try{
  $stmt = $PDO->prepare($sql);
  if(!empty($term)){
  foreach ($term as $key=>$value){
  $stmt->bindParam($key, $value, PDO::PARAM_STR);
  }
  }
  $stmt->execute();
  return $stmt->fetchAll(PDO::FETCH_ASSOC);
  } // if there is a problem we can handle it here
  catch (Exception $e) {
  echo $e->getMessage();
  }
  }
  //插入单条数据
  public function inOne($name,$data,$id="",$statc=true){
  if(!$statc){
  return false;
  }
  if(!is_array($data)){
  return false;
  }
  $PDO=$this->Link();
  foreach ($data as $key=>$value){
  $keys[]=$key;
  $values[]=$value;
  }
  $sql="insert into ".$name." (";
  $sql.=implode(",",$keys);
  $sql.=",_str";
  $sql.=") values (";
  $sql.implode(",",$values);
  $_str=time().$this->getrandstr();
  $sql.=",'$_str'";
  $sql.=" )";
  try{
  $stmt = $PDO->prepare($sql);
  $stmt->beginTransaction();
  $stmt->execute();
  if(empty($id)){
  return true;
  }
  $insql="select $id from $name where _str = '$_str'";
  $InsertId = $PDO->prepare($insql);
  $InsertId->execute();
  return $InsertId->fetch(PDO::FETCH_ASSOC);
  } // if there is a problem we can handle it here
  catch (Exception $e) {
  $PDO->rollBack();
  return false;
  }

  }
  //插入多条语句
  public function inAll($name,$data,$id="",$statc=true){
  if(!$statc){
  return false;
  }
  if(!is_array($data)){
  return false;
  }
  $PDO=$this->Link();
  $valueStr='';
  foreach ($data as $key=>$value){
  if(!is_array($value)){
  return false;
  }
  $values='';
  $keys='';
  $valueStr.="(";
  foreach ($value as $k=>$v){
  $values[]=$v;
  $keys[]=$k;
  }
  $_str=time().$this->getrandstr();
  $_strs[]=$_str;
  $keys[]="_str";
  $values[]=$_str;
  $valueStr.=implode(",",$values).")";
  }
  $sql="insert into ".$name." (";
  $sql.=implode(",",$keys);
  $sql.=",_str";
  $sql.=") values ".$valueStr;
  try{
  $PDO->beginTransaction();
  $stmt = $PDO->prepare($sql);
  $stmt->execute();
  if(empty($id)){
  return true;
  }
  $_strTerm=implode($_str);
  $insql="select $id from $name where _str in ($_strTerm)";
  $InsertId = $PDO->prepare($insql);
  $InsertId->execute();
  return $InsertId->fetchAll(PDO::FETCH_ASSOC);
  } // if there is a problem we can handle it here
  catch (Exception $e) {
  $PDO->rollBack();
  return false;
  }
  }
  //删除
  public function Del ($sql,$statc=true){
  if(!$statc){
  return false;
  }
  $PDO=$this->Link();
  try{
  $PDO->beginTransaction();
  $stmt = $PDO->prepare($sql);
  if(!empty($term)){
  foreach ($term as $key=>$value){
  $stmt->bindParam($key, $value, PDO::PARAM_STR);
  }
  }
  $stmt->execute();
  return true;
  } // if there is a problem we can handle it here
  catch (Exception $e) {
  $PDO->rollBack();
  return false;
  }
  }
  //修改
  public function Update ($sql,$statc=true){
  if(!$statc){
  return false;
  }
  $PDO=$this->Link();
  try{
  $PDO->beginTransaction();
  $stmt = $PDO->prepare($sql);
  if(!empty($term)){
  foreach ($term as $key=>$value){
  $stmt->bindParam($key, $value, PDO::PARAM_STR);
  }
  }
  $stmt->execute();
  return true;
  } // if there is a problem we can handle it here
  catch (Exception $e) {
  $PDO->rollBack();
  return false;
  }
  }
  //获取随机字符
  private function getrandstr(){
  $str='ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz1234567890';
  $randStr = str_shuffle($str);//打乱字符串
  $rands= substr($randStr,0,6);//substr(string,start,length);返回字符串的一部分
  return $rands;
  }
  }