方便实用的PHP数据库操作类

<?php      class 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 . '" rel="external nofollow" >' . $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 );                       } }

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