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php实现mysql数据库操作类分享

来源:建站教学网 编辑:小编 时间:2019-10-09 12:36
php实现mysql数据库操作类分享

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   = 'http://www.jzread.com/' . $Module . 'http://www.jzread.com/' . $Action . 'http://www.jzread.com/' . $this -> PageKey .'http://www.jzread.com/';
  $NaIndex  = 'http://www.jzread.com/' . $Module . 'http://www.jzread.com/' . $Action;
  $PageHtml = "/n<div class=http://www.jzread.com/"pagenav/">";
  $PageHtml .= '<span>' . $this->PageCount . '条记录        ' . $this->PageNo . 'http://www.jzread.com/' . $this->PageNum . '页</span>            ';
  $this->PageNo <= 1 or $PageHtml .= "<a href=http://www.jzread.com/"" . $NaIndex . "http://www.jzread.com/">首页</a>/n<a href=http://www.jzread.com/"" .  $NavUrl . ($this->PageNo - 1) . "http://www.jzread.com/">上一页</a>/n";
 if ( $NumNav ) { $PageHtml .= $this->NumPage($NavUrl); }
 $this->PageNo >= $this->PageNum or $PageHtml .= "<a href=http://www.jzread.com/"" . $NavUrl. ($this->PageNo + 1) .  "http://www.jzread.com/">下一页</a>/n<a href=http://www.jzread.com/"" . $NavUrl . $this->PageNum . "http://www.jzread.com/">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 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   = 'http://www.jzread.com/' . $Mulu . 'http://www.jzread.com/' . $PageName . 'http://www.jzread.com/' . $this->PageKey . 'http://www.jzread.com/';
  $PageHtml = "/n<div class=http://www.jzread.com/"pagenav/">";
  $PageHtml .= '<span>' . $this->PageCount . '条记录        ' . $this->PageNo . 'http://www.jzread.com/' . $this->PageNum . '页</span>            ';
  $this->PageNo <= 1 or $PageHtml .= "<a href=http://www.jzread.com/"" . $NavUrl . "1/">首页</a>/n<a href=http://www.jzread.com/"" .  $NavUrl . ($this->PageNo - 1) . "http://www.jzread.com/">上一页</a>/n";
 if ( $NumNav ) { $PageHtml .= $this->NumPage($NavUrl); }
 $this->PageNo >= $this->PageNum or $PageHtml .= "<a href=http://www.jzread.com/"" . $NavUrl. ($this->PageNo + 1) .  "http://www.jzread.com/">下一页</a>/n<a href=http://www.jzread.com/"" . $NavUrl . $this->PageNum . "http://www.jzread.com/">尾页</a>/n";
 $PageHtml .= "</div><div class=http://www.jzread.com/"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 ? 'http://www.jzread.com/'' . $Val . 'http://www.jzread.com/'' : ', /'' . $Val . 'http://www.jzread.com/'';
   }
   $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]', 'http://www.jzread.com/' => '[chu]');
    $Zhan = array('[jian]' => '-', '[jia]' => '+', '[cheng]' => '*', '[chu]' => 'http://www.jzread.com/');


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