Mysqli的批量CRUD數據

學會了使用了mysqli擴展庫以後,整體感受比面向過程的方法更加合理化,面向對象是大勢所趨,因此毫不能僅僅只用那一套老的mysql庫 了,也不利於phpmysql的操做,由於咱們在實際的開發中,不少仍是面向對象開發的,在這裏,就說一下mysqli之因此成爲擴展庫天然有其理由, 就批量操做的特性就大大的提升了代碼的執行效率。php

仍是和以往同樣,我喜歡把sql語句分爲dql語句和dml語句,主要是根據返回結果來分的,前者是結果集(須要釋放),後者是布爾值。html

下面是批量操做dml語句的代碼:mysql

<?php
  /*require_once "mysqltool.class.php";
  $SqlHelper=new SqlTool();
  $sql="insert into words(enword,chword) values(
    'classroom','教室')";
  $res=$SqlHelper->execute_dml($sql);
  //$res->free();*/
  //這是mysqli批量增刪改數據
  $mysqli= new MySqli("localhost","root","toor","education");
  if($mysqli->connect_error){
    die("鏈接失敗:".$mysqli->connect_error);
  }
  echo "鏈接成功<br/>";
  /*//批量添加數據
  $sql_1.="insert into words (enword,chword) values(
    'classroom444','教室');";
  $sql_1.="insert into words (enword,chword) values(
     'classroom222','教室');";
  $sql_1.="insert into words (enword,chword) values(
    'classroom333','教室');";
  $b=$mysqli->multi_query($sql_1);
  */
  //批量刪除數據
  /*$sql_2.="delete from words where id=14;";
  $sql_2.="delete from words where id=15;";
  $sql_2.="delete from words where id=16;";
  $sql_2.="delete from words where id=17;";
  $sql_2.="delete from words where id=18;";
  $sql_2.="delete from words where id=19;";
  $sql_2.="delete from words where id=20;";
  $sql_2.="delete from words where id=22;";
  */
  //也能夠批量修改。。。。
  /*可是不建議和select語句共用*/
  
  $b=$mysqli->multi_query($sql_2);
  if(!$b){
    echo "添加失敗";
  }else{
    echo "添加成功".$mysqli->connect_error;
  }
  $mysqli->close();
?>

下面是操做dql語句的代碼:相對於dml就有一點複雜了:linux

<?php
$mysqli= new MySqli("localhost","root","toor","education");
  if($mysqli->connect_error){
    die("鏈接失敗:".$mysqli->connect_error);
  }
  echo "鏈接成功<br/>";
<span style="white-space:pre">	</span>$sql_3.="select * from words;";
  $sql_3.="select * from words_test1;";
<span style="white-space:pre">	</span>if($res=$mysqli->multi_query($sql_3)){
  <span style="white-space:pre">	</span>do{
      $result=$mysqli->store_result();
      while($row=$result->fetch_row()){
        foreach($row as $key=>$val){
          echo "----".$val;
        }
        echo "<br/>";
      }
      $result->free();
      if(!$mysqli->more_results()){
        break;
      }
      echo "***********************************************";
    }while($mysqli->next_result());
  }
  $mysqli->close();
?>

主要就是後者返回的是一個結果集的集合,須要一層一層的把它剝開看可以看到東西。sql

本文僅限參考和csdn轉載,尊重原創,查看個人MyCodeDream我的博客點擊打開連接fetch

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