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PHP封装的MSSql操作类完整实例

更新时间:2020-03-09 10:00:33 作者:startmvc
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:<?php/*MSSql的

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:


<?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");
 }
}
?>

PHP 封装 MSSql操作类