php实现mysql数据库操作类分享-软之星SOFT

复制代码代码如下:
<?php
/*
数据库操作类
*/
class Mysql{
private $LocalHost = "localhost";
private $LoaclUser = "root";
private $LocalPass = "123456";
private $LocalBase = "jiangxibaiyi";
private $LocalCode = "UTF8";
private $PreFix;
private $Conn;
private $Start     = 0;
private $Error     = false; //数据库连接状态, false表示未连接或连接不正常
public $Err       = true; //Sql执行结果 private $Table;
private $Field     = "*";
private $Where     = "";
private $Order     = ""; private $PageSize = 0; //分页显示->每页多少条，0为不分页显示
private $PageCount = 1; //分页显示->总共有多少条
private $PageNum   = 1; //分页显示->总共有多少页
private $PageNo    = 1; //分页显示->当前第几页
private $PageKey   = "page"; //分页url参数键
private $PageStart = 0; //分页显示->当前从第几条开始返回
private $Select;
private $Rest; private $Result    = false;//结果集 public $FormArray = array(); public $Instr_ID = 0;
private $j = 0;
public function Parameter($Loca, $Root, $Pass, $Base, $Code, $PreFix = ""){
  $this->LoaclUser = $Root;
  $this->LocalBase = $Base;
  $this->LocalCode = $Code;
  $this->LocalHost = $Loca;
  $this->LocalPass = $Pass;
  $this->PreFix    = $PreFix;
  return $this;
}
private function Connection( $Sql ){
  !function_exists(mysqli_connect) ? die("查询失败，无法加载mysqli扩展") : null;
  $this->Conn = @new mysqli( $this->LocalHost, $this->LoaclUser, $this->LocalPass, $this->LocalBase);
  $this->Error = mysqli_connect_errno() == 0 ? true : false;
  !$this->Error ? die("数据库连接错误，请检查数据库连接参数") : null;
  $this->Conn->query("SET NAMES " . $this->LocalCode);
  $this->Rest = $this->Conn->query($Sql);
  $this->Err = mysqli_error($this->Conn);
  $this->Instr_ID = mysqli_insert_id($this->Conn);
  $this->Rest->free_result;
  $this->Conn->close;
  $this -> FormArray = "";
  return $this;
} public function null(){
  $this->PageSize = 0;
  //$this->PageCount = 1;
  $this->PageStart = 1;
  $this->Field     = " * ";
     $this->Select    = "";
  unset($this->Table, $this->Where,$this->Order, $this->Result);
} public function Table( $TableName ) {//数据表
   $this -> null();
   $this->Table = "`" . $this->PreFix . $TableName . "`";
   return $this;
} public function Field( $Array = "*" ) {//数据字段
   !empty( $this->Field ) ? $this->Field = "" : null;
   $Array = explode(",", $Array);
   foreach ( $Array as $field ) {
   $this->Field .= !$this->Start ? "`" . $field . "`" : ", `" . $field . "`";
   $this->Start++;
   }
   $this->Start = 0;
   return $this;
} public function Where( $Where ) {//条件
       $this->Where = " where " .$Where;
    return $this;
} public function Order( $Order ) {//排序
   $this->Order = " order by " . $Order;
   return $this;
} public function pk( $key ) {//分页url参数键
   $this->PageKey = $key;
   return $this;
} public function Page( $PageSize ) {//分页
   $this->PageSize = $PageSize;
   $this->PageNo   = $this->get( $this->PageKey );
   $this->PageNo   = empty( $this->PageNo ) || !isset( $this->PageNo ) || !is_numeric( $this->PageNo ) || $this->PageNo < 1 ? 1 : $this->PageNo;
   return $this;
} public function post( $Key, $Filter = true ){
  return $Filter ? strip_tags($_POST[$Key]) : $_POST[$Key];
} public function get( $Key, $Filter = true ){
  return $Filter ? strip_tags($_GET[$Key]) : $_GET[$Key];
} public function Sel(){
  $this->Select = "Select " . $this->Field . " from " . $this->Table . $this->Where . $this->Order;
  $this->Connection( $this->Select );
  if ( $this->Rest->num_rows ) {
   while ( $Rs = $this->Rest->fetch_assoc() ) {
     $this->Result[] = $Rs;
    }
  }
    $DataBase = $this->Result;
    return empty($DataBase) ? false : $DataBase;
} public function querys( $Sql = "", $Type = "not", $biao = false ) {
  $this->Select = $Sql;
  $this->Connection( $this->Select );
  if ( $this->Rest->num_rows ) {
     if ( !$biao ) {
   while ( $Rs = $this->Rest->fetch_array() ) {
     $this->Result[] = !preg_match("/^d+$/i", $Type) ? $Rs : $Rs[ $Type ];
    }
  } else {
   while ( $Rs = $this->Rest->fetch_assoc() ) {
     $this->Result[] = $Rs;
    }
  }
  }
    $DataBase = $this->Result;
    return empty($DataBase) ? false : $DataBase; } public function executes( $Sql = "" ){
  $this->Connection( $Sql );
  return $this->Rest;
}
public function exists( $T = "", $F = "", $W = ""){
  if ( empty( $F ) ) { return 0; }
  $cmd = empty( $W ) ? "Select sum(" . $F . ") as `baiyinum` from `" . $this->PreFix . $T ."`" : "Select sum(" . $F . ") as `baiyinum` from `" . $this->PreFix . $T ."` Where " . $W;
        $this->Connection( $cmd );
  unset( $T, $F, $W, $cmd );
  $Rel = $this->Rest->fetch_array();
  return round( $Rel["baiyinum"], 2 );
}
public function ExistsTo( $Bili = 10000, $T = "", $F = "", $W = ""){
  if ( empty( $F ) ) { return 0; }
  $cmd = empty( $W ) ? "Select sum(" . $F . ") as `baiyinum` from `" . $this->PreFix . $T ."`" : "Select sum(" . $F . ") as `baiyinum` from `" . $this->PreFix . $T ."` Where " . $W;
        $this->Connection( $cmd );
  unset( $T, $F, $W, $cmd );
  $Rel = $this->Rest->fetch_array();
  return round( $Rel["baiyinum"] * $Bili );
}
public function Select( $Type = true, $ListNum = 1 ){ //返回记录（数组形式，返回条数）
   $this->Select = "Select " . $this->Field . " from " . $this->Table . $this->Where . $this->Order;
   if ( is_numeric( $ListNum ) ) {
  if ( $this->PageSize > 0 ) {
   $this->Connection( $this->Select );//执行查询
   $this->PageCount = $this->Rest->num_rows;//取得记录总数
   $this->PageNum   = ceil($this->PageCount / $this->PageSize); //总共有多少页
   $this->PageNo    = $this->PageNo > $this->PageNum ? $this->PageNum : $this->PageNo;
   $this->PageStart = ( $this->PageNo - 1 ) * $this->PageSize;   //当前从第几条开始返回
   $this->Select   .= " limit " . $this->PageStart . ", " .$this->PageSize; //重新构造sql语句
  } else {
   $this->Select   .= " limit " . $ListNum; //重新构造sql语句
  }
   } else {
   $this->Select   .= " limit 1"; //重新构造sql语句
   }
   //echo $this->Select;
   $this->Connection( $this->Select );//再次执行查询
   if ( $this->Rest->num_rows ) {//如果记录存在
  if ( $Type ) {
    while ( $Rs = $this->Rest->fetch_array() ) {
     $this->Result[] = $Rs;
    }
  }else{
    while ( $Rs = $this->Rest->fetch_assoc() ) {
     $this->Result[] = $Rs;
    }
  }
   }
   if ( ( $ListNum == 1 or !is_numeric( $ListNum ) ) && !$this->PageSize) { $this->Result = $this->Result[0]; }
   $DataBase = $this->Result;
   return empty($DataBase) ? false : $DataBase;
}   public function Num() { //返回记录总数
     $this->Select = "Select " . $this->Field . " from " . $this->Table . $this->Where . $this->Order;
$this->Connection( $this->Select );//执行查询
return $this->Rest->num_rows;//取得记录总数
   }   public function PageNav($NumNav = false ) { //分页
$Action = $this -> get("action");
!empty( $Action ) or $Action = "index";
$Module = $this -> get("module");
!empty( $Module ) or $Module = "index";
$NavUrl   = "/" . $Module . "/" . $Action . "/" . $this -> PageKey ."/";
$NaIndex = "/" . $Module . "/" . $Action;
$PageHtml = "<div class="pagenav">";
$PageHtml .= "<span>" . $this->PageCount . "条记录        " . $this->PageNo . "/" . $this->PageNum . "页</span>            ";
$this->PageNo <= 1 or $PageHtml .= "<a href="" . $NaIndex . "">首页</a><a href="" . $NavUrl . ($this->PageNo - 1) . "">上一页</a>";
if ( $NumNav ) { $PageHtml .= $this->NumPage($NavUrl); }
$this->PageNo >= $this->PageNum or $PageHtml .= "<a href="" . $NavUrl. ($this->PageNo + 1) . "">下一页</a><a href="" . $NavUrl . $this->PageNum . "">尾页</a>";
$PageHtml .= "</div>";
return $PageHtml;
   }   private function NumPage( $Can = "" ) { //数字分页
    $NumHtml = "";
    $First   = 1;
    $Last    = $this->PageNum;
    if ( $this->PageNum > 5 ) {
     if ( $this->PageNo < $this->PageNum ) {
     $First = $this->PageNo - 2;
     $Last = $this->PageNo + 2;
     }else{
     $First = $this->PageNo - 4;
     $Last = $this->PageNum;
     }
    }
    if ( $First < 1 ) { $First   = 1; $Last = $First + 4;}
    if ( $Last > $this->PageNum ) { $First   = $this->PageNum - 4; $Last = $this->PageNum;}
    for( $i = $First; $i <= $Last; $i++) {
     $NumHtml .= $this->PageNo != $i ? " " . "<a href="" . $Can . $i . "">" . $i . "</a>" . " " : " " ."<a class="hover" disabled="disabled">" . $i . "</a>" . " ";
    }
    unset($Can, $First, $i, $Last);
    return $NumHtml;
   }   public function UserPage($NumNav = false, $PageName = "index", $Mulu = "user" ) { //会员中心分页
     $NavUrl   = "/" . $Mulu . "/" . $PageName . "/" . $this->PageKey . "/";
$PageHtml = "<div class="pagenav">";
$PageHtml .= "<span>" . $this->PageCount . "条记录        " . $this->PageNo . "/" . $this->PageNum . "页</span>            ";
$this->PageNo <= 1 or $PageHtml .= "<a href="" . $NavUrl . "1">首页</a><a href="" . $NavUrl . ($this->PageNo - 1) . "">上一页</a>";
if ( $NumNav ) { $PageHtml .= $this->NumPage($NavUrl); }
$this->PageNo >= $this->PageNum or $PageHtml .= "<a href="" . $NavUrl. ($this->PageNo + 1) . "">下一页</a><a href="" . $NavUrl . $this->PageNum . "">尾页</a>";
$PageHtml .= "</div><div class="clear"></div>";
return $PageHtml;
   }
   //表单处理开始 //判断表单时候提交
public function FormIs( $Keys = "mm" ) {
  return $_POST[ $Keys ] == 1 ? true : false;
} //post方式获取数据
public function _post( $Keys = "", $TiHuan = "") {
  $Values = strip_tags( $_POST[ $Keys ] );
  $this->FormArray[$Keys] = empty( $Values ) ? $TiHuan : $Values;
        return empty( $Values ) ? $TiHuan : $Values;
} //get方法获取数据
public function _get( $Keys = "", $TiHuan = "") {
  $Values = strip_tags( $_GET[ $Keys ] );
        return empty( $Values ) ? $TiHuan : $Values;
} //判断是否为数字并且不小于0
public function IsNum( $Num = 0, $Mesg = "参数必须为数字" ) {
  if ( is_numeric( $Num ) && !empty( $Num ) && $Num >= 0 ) {
   return $Num;
  }else{
   die( $Mesg );
  }
} //判断是否为数字并且不小于0返回True/False
public function NumBer( $Num = 0) {
   return is_numeric( $Num ) && !empty( $Num ) && $Num >= 0 ? true : false;
} //检测相关数据似乎存在
public function IsData($Types = true, $memg = "数据已经存在" ){
  $this->Connection("select " . $this->Field . " from " . $this->Table . $this->Where);
  if ( $Types ){
   $this->Rest->num_rows > 0 ? die( $memg ) : null;
  } else {
   return $this->Rest->num_rows;
  }
}
//写入数据库记录
public function into( $Mesg = "" ){
  !is_array( $this->FormArray ) ? die( $Mesg ) : null;
  $Sql = "insert into " . $this->Table . " (`";
  $I   = 0;
  foreach ( $this->FormArray as $Key => $Val ){
   $Duan .= !$I ? $Key . "`" : ", `" . $Key . "`";
   if ( is_numeric( $Val ) ){
    $Vals .= !$I ? $Val : ", " . $Val;
   }else{
    $Vals .= !$I ? """ . $Val . """ : ", "" . $Val . """;
   }
   $I++;
  }
  $Sql .= $Duan . ") values (" . $Vals . ")";  //@file_put_contents("1.sql", $Sql, FILE_APPEND);  $this->Connection( $Sql );
  return !empty( $this->Err ) ? false : true;
}   //数组形式写入数据
   public function MsgBox( $Table = "", $Filed = array() ) {
    $this -> Table($Table);
    foreach( $Filed as $Key => $Val ) {
    $this -> FormArray[ $Key ] = $Val;
    }
   return $this -> Into("未取得数据");
   }   //修改数据库记录
   public function Edit( $Array = array() ) {
    if ( empty( $Array ) ) { $Array = $this -> FormArray; }
    if ( !is_array( $Array ) || empty( $Array ) ) {
     return false;
    } else {
       $Sql = "update " . $this -> Table . " set ";
    $I   = 0;
    $Sub = "";
    $Huan = array("-" => "[jian]", "+" => "[jia]", "*" => "[cheng]", "/" => "[chu]");
    $Zhan = array("[jian]" => "-", "[jia]" => "+", "[cheng]" => "*", "[chu]" => "/");

foreach ( $Array as $Files => $Val ) {
     $Val = !is_numeric( $Val ) && !preg_match("/`w+`s*(+|-|*|/)/i", $Val) ? """ . $Val . """ : $Val;
     foreach ( $Huan as $key => $val ){
      $Val = str_replace($key, $val, $Val);
     }
     $duan = !$I ? "`" . $Files . "` = " : ", `" . $Files . "` = ";
     $Sub .= $duan . $Val;
     $I++;
    }
    $Sql .= $Sub . $this -> Where;
    foreach ( $Zhan as $Fan => $Hui ) {
     $Sql = str_replace($Fan, $Hui, $Sql);
    }    //echo $Sql; die;    $this -> Connection( $Sql );
    unset( $Array, $duan, $Fan, $Files, $Huan, $Hui, $I, $key, $Sql, $Sub, $Val, $Zhan, $val );
    return !empty( $this -> Err ) ? false : true;
   }
   }   //删除数据库记录
   public function del(){
    $Sql = "delete from " . $this->Table . $this->Where;
    $this->Connection( $Sql );
    unset($Sql);
    return !empty( $this->Err ) ? false : true;
   }   //表单处理结束   //页面跳转
   public function Msg( $Text = "操作成功" ) {
    echo "<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />";
    echo "<script type="text/javascript">

</script>";
exit;
   }   #取得系统当前时间
   public function Times(){
    return str_replace("-", "[jian]", date("Y-m-d H:i:s"));
   }   #取得用户IP地址
public function GetIP(){
   if (getenv("HTTP_CLIENT_IP") && strcasecmp(getenv("HTTP_CLIENT_IP"), "unknown"))
    $ip = getenv("HTTP_CLIENT_IP");
  else if (getenv("HTTP_X_FORWARDED_FOR") && strcasecmp(getenv("HTTP_X_FORWARDED_FOR"), "unknown"))
    $ip = getenv("HTTP_X_FORWARDED_FOR");
  else if (getenv("REMOTE_ADDR") && strcasecmp(getenv("REMOTE_ADDR"), "unknown"))
    $ip = getenv("REMOTE_ADDR");
  else if (isset($_SERVER["REMOTE_ADDR"]) && $_SERVER["REMOTE_ADDR"] && strcasecmp($_SERVER["REMOTE_ADDR"], "unknown"))
    $ip = $_SERVER["REMOTE_ADDR"];
  else
    $ip = "unknown";
   return($ip);
}
   //最后关闭数据库连接
   public function Close(){
    !is_object( $this -> Conn ) or mysqli_close( $this -> Conn );
   }}

使用方法：
声明数据库对象
$Conn = new Mysql;
加载数据库参数
$Conn->Parameter(数据库服务器, 数据库用户名, 数据库密码, 数据库名称, 数据库编码, 数据库表前缀[可为空]);

上面的代码就已经加载这个类文件进来了，并且初始化了一些数据库连接参数！

下面介绍几个基本是方法函数：
1、 $Conn -> Table();
选择数据表，参数是数据表名称
2、$Conn -> Field();
选择的字段名称，多个用逗号隔开，如不调用这个方法，则返回全部
3、$Conn -> Where();
Sql Where子语句，根据条件筛选
4、$Conn -> Order();
Sql 排序
5、$Conn -> Page(int);
参数是一个正整数数字，如调用这个方法，记录将分页显示
6、$Conn -> Select(布尔值);
执行查询，返回查询结果，如果有，则是一个二维数组，如果无，则返回假，参数可省略，如省略，默认为真，返回的数组包含数字元素
7、$Conn -> Del();
删除记录
8、 $Conn -> Edit(array());
修改记录，参数是一个一维数组，数组键是字段名称，数组值是字段值
9、$Conn -> Into(array());
添加记录，参数是一个一维数组，数组键是字段名称，数组值是字段值。

以上方法可连续调用，比如：
复制代码代码如下:
$Rult = $Conn -> Table("user") -> Select(); //查询返回user表的所有记录
$Rult = $Conn -> Table("user") -> Page(20) -> Select();//查询返回user表的所有记录，并分页显示，每页20条；

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