php写一个操作mysql的类

首先是mysql方式

<?phpclass ConnectionMySQL{    //主机    private $host="localhost";    //数据库的username    private $name="root";    //数据库的password    private $pass="";    //数据库名称    private $table="phptest";    //编码形式    private $ut="utf-8";    //构造函数    function __construct(){        $this->ut=$ut;        $this->connect();    }    //数据库的链接    function connect(){        $link=mysql_connect($this->host,$this->name,$this->pass) or die ($this->error());        mysql_select_db($this->table,$link) or die("没该数据库：".$this->table);        mysql_query("SET NAMES '$this->ut'");    }    function query($sql, $type = '') {        if(!($query = mysql_query($sql))) $this->show('Say:', $sql);        return $query;    }    function show($message = '', $sql = '') {        if(!$sql) echo $message;        else echo $message.'<br>'.$sql;    }    function affected_rows() {        return mysql_affected_rows();    }    function result($query, $row) {        return mysql_result($query, $row);    }    function num_rows($query) {        return @mysql_num_rows($query);    }    function num_fields($query) {        return mysql_num_fields($query);    }    function free_result($query) {        return mysql_free_result($query);    }    function insert_id() {        return mysql_insert_id();    }    function fetch_row($query) {        return mysql_fetch_row($query);    }    function version() {        return mysql_get_server_info();    }    function close() {        return mysql_close();    }    //向$table表中插入值    function fn_insert($table,$name,$value){        $this->query("insert into $table ($name) value ($value)");    }    //根据$id值删除表$table中的一条记录    function fn_delete($table,$id,$value){        $this->query("delete from $table where $id=$value");        echo "id为". $id." 的记录被成功删除!";    }}$db =  new ConnectionMySQL();$db->fn_insert('test','id,name,sex',"'','hongtenzone','M'");$db->fn_delete('test', 'id', 1);?>

mysqli的方式：

<?phpclass Mysql{    private $LocalHost = 'localhost';    private $LoaclUser = '';    private $LocalPass = '';    private $LocalBase = '';    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 = "\n<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>\n<a href=\"" .  $NavUrl . ($this->PageNo - 1) . "\">上一页</a>\n";    if ( $NumNav ) { $PageHtml .= $this->NumPage($NavUrl); }    $this->PageNo >= $this->PageNum or $PageHtml .= "<a href=\"" . $NavUrl. ($this->PageNo + 1) .  "\">下一页</a>\n<a href=\"" . $NavUrl . $this->PageNum . "\">尾页</a>\n";    $PageHtml .= "</div>\n";    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 ? "\n\t" . '<a href="' . $Can . $i . '">' . $i . '</a>' . "\n\t" : "\n\t" .'<a class="hover" disabled="disabled">' . $i . '</a>' . "\n\t";       }       unset($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 = "\n<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>\n<a href=\"" .  $NavUrl . ($this->PageNo - 1) . "\">上一页</a>\n";    if ( $NumNav ) { $PageHtml .= $this->NumPage($NavUrl); }    $this->PageNo >= $this->PageNum or $PageHtml .= "<a href=\"" . $NavUrl. ($this->PageNo + 1) .  "\">下一页</a>\n<a href=\"" . $NavUrl . $this->PageNum . "\">尾页</a>\n";    $PageHtml .= "</div><div class=\"clear\"></div>\n";    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">  <!--    alert("' . $Text . '");    document.location="' . $_SERVER['HTTP_REFERER'] . '";  //-->   </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 );   }     }