PHP实现的mysql操作类【MySQL与MySQLi方式】


            本文实例讲述了PHP实现的mysql操作类。分享给大家供大家参考，具体如下：

首先是mysql方式





<?php

class 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：





<?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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