详解php封装Mysql操作类

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发布时间：2018-01-05 18:01:32

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来源于php中文网

原创

这个php实现的mysql的操作类完整版已经使用过了，而这个简化版是经过修改完整版后的简化版，适用在一般的 php 应用中，功能上可以实现基本的增删改查的操作，以及打印 mysql 错误，自我感觉不错，如果网站应用不是很强大，应用这个 mysql 的操作类已经足够了。希望对大家有所帮助。

自己封装的Mysql简易操作类，已塞在Ben框架中，基于PDO来写的，代码风格上有些无厘头。。。

mysql.class.php

server = $server;
    $this->database = $database;
    $this->user = $user;
    $this->password = $password;
    parent::__construct("mysql:host=$server;port=$port;dbname=$database",$user,$password);
    $this->query('SET NAMES utf8');
  }
  public function drop($table){
    $sql = 'DROP TABLE '.$table.';';
    $re = $this->query($sql);
    if($re){
      return true;
    }else{
      return false;
    }
  }
  public function insert($table,$name,$value=null){
    $sql = "INSERT INTO ".$table.'(';
    if($value == null){
    $arrname = array_keys($name);
    $arrvalue = array_values($name);
    }else{
    $arrname = explode('|', $name);
    $arrvalue = explode('|', $value);
    }
    for($i=0;$iquery($sql);
    if($re){
      return true;
    }else{
      return false;
    }
  }
  public function delete($table,$Conditionsname,$Conditionsvalue=null){
    if($Conditionsvalue!=null){
      $sql = "DELETE FROM ".$table." WHERE ".$Conditionsname."='".$Conditionsvalue."';";
    }else{
      $sql = "DELETE FROM ".$table." WHERE ";
      $arrname = array_keys($Conditionsname);
      $arrvalue = array_values($Conditionsname);
      for($i=0;$iquery($sql);
    if($re){
      return true;
    }else{
      return false;
    }
  }
  public function select($table,$name,$Conditionsname,$Conditionsvalue=null){
    if($Conditionsvalue!=null){
      $sql = "SELECT ".$name." FROM ".$table." WHERE ".$Conditionsname."='".$Conditionsvalue."';";
    }else{
      $sql = "SELECT ".$name." FROM ".$table." WHERE ";
      $arrname = array_keys($Conditionsname);
      $arrvalue = array_values($Conditionsname);
      for($i=0;$iquery($sql);
    $row = $re->fetch();
    return $row[$name];
  }
  public function update($table,$name,$value,$Conditionsname,$Conditionsvalue=null){
    if($Conditionsvalue!=null){
      $sql = "UPDATE ".$table." SET ".$name."= '".$value."' WHERE ".$Conditionsname."='".$Conditionsvalue."';";
    }else{
      $sql = "UPDATE ".$table." SET ".$name."= '".$value."' WHERE ";
      $arrname = array_keys($Conditionsname);
      $arrvalue = array_values($Conditionsname);
      for($i=0;$iquery($sql);
    if($re){
      return true;
    }else{
      return false;
    }
  }
  public function group($table,$name){
    $sql = "SELECT ".$name." FROM ".$table.";";
    $return = array();
    $re = $this->query($sql);
    while($row = $re->fetch(PDO::FETCH_ASSOC)){
      array_push($return,$row[$name]);
    }
    return $return;
  }
  public function fetchall($sql){
    $return = array();
    $re = $this->query($sql);
    while($row = $re->fetch(PDO::FETCH_ASSOC)){
      array_push($return,$row);
    }
    return $return;
  }
}