<?php
  require('include/mysql_connect/actSQL.class.php');
  $key=$_REQUEST['key'];
  $a=new actSQL('localhost','root','1234','tpss');
  //獲取信息
  if($key=='1')
  {
   $a->getAllData('t_prekeychart');
  }
  if($key=='2')
  { 
   $objectstr=$_REQUEST['object'];   
   if($a->insertData($objectstr,'t_prekeychart'))
   {
    echo json_encode("true");
   }else{
    echo json_encode("false");
   }
   //test
   //$test='{"keychartid":"2","keyid":"2","keychartname":"2","level":"2","showtype":"2","helptips":"2","keylevel":"2","ishmap":"2"}';
   //$a->insertData($test,'t_prekeychart');
  }
  if($key=='3')
  { 
   $prekey=$_REQUEST['keychartid'];
   $prekeyname='keychartname';
   if($a->delData($prekey,$prekeyname,'t_prekeychart'))
   {
    echo json_encode("true");
   }else{
    echo json_encode("false");
   }
  }
  if($key=='4')
  {
   $objectstr=$_REQUEST['object'];
   $prekeyname='keychartid';
   if($a->updData($objectstr,$prekeyname,'t_prekeychart'))
   {
    echo json_encode("true");
   }else{
    echo json_encode("false");
   }
  }
?>

/*
   * 添加信息
   * @param:$objstr:json風(fēng)格的數(shù)據(jù)庫插入信息字符串
   *   $tablename:表名
   */
  function insertData($objstr,$tablename)
  {
    $dbc=$this->conData();
    if($dbc)
    { 
     $columnname=array();
     $columnname=$this->getColumns($tablename);
     //echo $columnname[0];
     $clos=implode(',',$columnname); //將列名數(shù)組轉(zhuǎn)換為字符串
     //echo $clos;
     $data=json_decode($objstr,true); //將json格式的字符串轉(zhuǎn)換為關(guān)聯(lián)數(shù)組
     //echo $value['keychartname'];
     $values=array();
     foreach($columnname as $value)
     {
       //按照查詢到的列名查詢數(shù)據(jù)，數(shù)據(jù)為空的，賦值為NULL，防止數(shù)據(jù)庫插入數(shù)值錯(cuò)位
       //echo $data[$value]."<br>";
       if(isset($data[$value]))
       {
         array_push($values,$data[$value]);
       }else{
        $data[$value]=NULL;
        array_push($value,$data[$value]);
       }
     }
     $strvalue=implode(',',$values);
     //echo $strvalue;
     /*
     * SQL： insert into $tablename($clos) values(...)
     */
     $sql=<<<SQL
     insert into $tablename($clos) values($strvalue);
SQL;
     //echo $sql;
     $res=mysqli_query($dbc,$sql);
     if($res)
     {
      return true;
     }else{
       return false;
     }
    }else{
      echo "連接錯(cuò)誤!";
    } 
  }
/*
   *更新信息 
   *@param: $objstr:json風(fēng)格的數(shù)據(jù)庫更新信息字符串
   *   $tablename:表名
   *   $prekeyname:主鍵名  
   * */
  function updData($objstr,$prekeyname,$tablename)
  {
    $dbc=$this->conData();
    if($dbc)
    {
     $columnname=array();
     $columnname=$this->getColumns($tablename); 
     //$clos=implode(',',$columnname); //將列名數(shù)組轉(zhuǎn)換為字符串
     $data=json_decode($objstr,true); //將json格式的字符串轉(zhuǎn)換為關(guān)聯(lián)數(shù)組
     $sets=array();
     foreach($columnname as $value)
     { 
      //列名不等于主鍵名獲取值
      if($prekeyname!=$value)
      {
        //set $value=$data[$value];
        array_push($sets,"$value=$data[$value]");//接好的set語句部分
      }
     }
     //$sets數(shù)組轉(zhuǎn)化為字符串
     $stringsets=implode(',',$sets);
     //echo $stringsets;
     /*
     * SQL:update $tablename set ..... where $prekeyname=$data[$prekeyname]; 
     * */
     $sql=<<<SQL
      update $tablename set $stringsets where $prekeyname=$data[$prekeyname];
SQL;
     $res=mysqli_query($dbc,$sql);
     if($res)
     {
      return true;
     }else{
      return false;
     }
    }else{
      echo "連接錯(cuò)誤";
    }
  }
/*
   *獲取表的所有列名
   *@param:$tablename:表名
   */
  function getColumns($tablename)
  { 
   $dbc=@mysqli_connect('localhost','root','1234','information_schema');
   if(!$dbc)
   {
    echo "Connect Error".mysqli_connect_error($dbc);
   }else
   {
    //連接成功,從表COLUMNS獲取表的所有列名
    $sql="select COLUMN_NAME from columns where TABLE_NAME='$tablename'";
    $res=@mysqli_query($dbc,$sql);
    $items=array();
    if($res)
    {
     while($row=mysqli_fetch_array($res,MYSQLI_ASSOC))
     {
      $columnname=$row['COLUMN_NAME'];
      array_push($items,$columnname);
     }
    return $items;
    mysqli_close($dbc);
    }
    else{
     echo "查詢失敗，請(qǐng)檢查SQL語句!";
     }
   }
  }