Home  >  Article  >  php教程  >  PHP封装的MSSql操作类完整实例,php封装mssql实例

PHP封装的MSSql操作类完整实例,php封装mssql实例

WBOY
WBOYOriginal
2016-06-13 08:38:05956browse

PHP封装的MSSql操作类完整实例,php封装mssql实例

本文实例讲述了PHP封装的MSSql操作类。分享给大家供大家参考,具体如下:

<&#63;php
/*MSSql的操作类*/
class MSSql {
  var $link;
  var $querynum = 0;
  /*连接MSSql数据库,参数:dbsn->数据库服务器地址,dbun->登陆用户名,dbpw->登陆密码,dbname->数据库名字*/
  function Connect($dbsn, $dbun, $dbpw, $dbname) {
    if($this->link = @mssql_connect($dbsn, $dbun, $dbpw, true)) {
      $query = $this->Query('SET TEXTSIZE 2147483647');
      if (@mssql_select_db($dbname, $this->link)) {
      } else {
        $this->halt('Can not Select DataBase');
      }
    } else {
      $this->halt('Can not connect to MSSQL server');
    }
  }
  /*执行sql语句,返回对应的结果标识*/
  function Query($sql) {
    if($query = @mssql_query($sql, $this->link)) {
      $this->querynum++;
      return $query;
    } else {
      $this->querynum++;
      $this->halt('MSSQL Query Error', $sql);
    }
  }
  /*执行Insert Into语句,并返回最后的insert操作所产生的自动增长的id*/
  function Insert($table, $iarr) {
    $value = $this->InsertSql($iarr);
    $query = $this->Query('INSERT INTO ' . $table . ' ' . $value . '; SELECT SCOPE_IDENTITY() AS [insertid];');
    $record = $this->GetRow($query);
    $this->Clear($query);
    return $record['insertid'];
  }
  /*执行Update语句,并返回最后的update操作所影响的行数*/
  function Update($table, $uarr, $condition = '') {
    $value = $this->UpdateSql($uarr);
    if ($condition) {
      $condition = ' WHERE ' . $condition;
    }
    $query = $this->Query('UPDATE ' . $table . ' SET ' . $value . $condition . '; SELECT @@ROWCOUNT AS [rowcount];');
    $record = $this->GetRow($query);
    $this->Clear($query);
    return $record['rowcount'];
  }
  /*执行Delete语句,并返回最后的Delete操作所影响的行数*/
  function Delete($table, $condition = '') {
    if ($condition) {
      $condition = ' WHERE ' . $condition;
    }
    $query = $this->Query('DELETE ' . $table . $condition . '; SELECT @@ROWCOUNT AS [rowcount];');
    $record = $this->GetRow($query);
    $this->Clear($query);
    return $record['rowcount'];
  }
  /*将字符转为可以安全保存的mssql值,比如a'a转为a''a*/
  function EnCode($str) {
    return str_replace(''', '''', str_replace('', '', $str));
  }
  /*将可以安全保存的mssql值转为正常的值,比如a''a转为a'a*/
  function DeCode($str) {
    return str_replace('''', ''', $str);
  }
  /*将对应的列和值生成对应的insert语句,如:array('id' => 1, 'name' => 'name')返回([id], [name]) VALUES (1, 'name')*/
  function InsertSql($iarr) {
    if (is_array($iarr)) {
      $fstr = '';
      $vstr = '';
      foreach ($iarr as $key => $val) {
        $fstr .= '[' . $key . '], ';
        $vstr .= ''' . $val . '', ';
      }
      if ($fstr) {
        $fstr = '(' . substr($fstr, 0, -2) . ')';
        $vstr = '(' . substr($vstr, 0, -2) . ')';
        return $fstr . ' VALUES ' . $vstr;
      } else {
        return '';
      }
    } else {
      return '';
    }
  }
  /*将对应的列和值生成对应的insert语句,如:array('id' => 1, 'name' => 'name')返回[id] = 1, [name] = 'name'*/
  function UpdateSql($uarr) {
    if (is_array($uarr)) {
      $ustr = '';
      foreach ($uarr as $key => $val) {
        $ustr .= '[' . $key . '] = '' . $val . '', ';
      }
      if ($ustr) {
        return substr($ustr, 0, -2);
      } else {
        return '';
      }
    } else {
      return '';
    }
  }
  /*返回对应的查询标识的结果的一行*/
  function GetRow($query, $result_type = MSSQL_ASSOC) {
    return mssql_fetch_array($query, $result_type);
  }
  /*清空查询结果所占用的内存资源*/
  function Clear($query) {
    return mssql_free_result($query);
  }
  /*关闭数据库*/
  function Close() {
    return mssql_close($this->link);
  }
  function halt($message = '', $sql = '') {
    $message .= '<br />MSSql Error:' . mssql_get_last_message();
    if ($sql) {
      $sql = '<br />sql:' . $sql;
    }
    exit("DataBase Error.<br />Message $message $sql");
  }
}
&#63;>

更多关于PHP相关内容感兴趣的读者可查看本站专题:《PHP基于pdo操作数据库技巧总结》、《PHP+MongoDB数据库操作技巧大全》、《php面向对象程序设计入门教程》、《php字符串(string)用法总结》、《php+mysql数据库操作入门教程》及《php常见数据库操作技巧汇总》

希望本文所述对大家PHP程序设计有所帮助。

Statement:
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn