本文實例講述了PHP封裝的MSSql操作類。分享給大家供大家參考，具體如下：
<?php
/*MSSql的操作類*/
class MSSql {
var $link;
var $querynum = 0;
/*連接MSSql數(shù)據(jù)庫，參數(shù)：dbsn->數(shù)據(jù)庫服務(wù)器地址，dbun->登陸用戶名，dbpw->登陸密碼，dbname->數(shù)據(jù)庫名字*/
function Connect($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 {
$this->halt('Can not connect to MSSQL server');
}
}
/*執(zhí)行sql語句，返回對應(yīng)的結(jié)果標(biāo)識*/
function Query($sql) {
if($query = @mssql_query($sql, $this->link)) {
$this->querynum++;
return $query;
} else {
$this->querynum++;
$this->halt('MSSQL Query Error', $sql);
}
}
/*執(zhí)行Insert Into語句，并返回最后的insert操作所產(chǎn)生的自動增長的id*/
function Insert($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 $record['insertid'];
}
/*執(zhí)行Update語句，并返回最后的update操作所影響的行數(shù)*/
function Update($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 $record['rowcount'];
}
/*執(zhí)行Delete語句，并返回最后的Delete操作所影響的行數(shù)*/
function Delete($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 $record['rowcount'];
}
/*將字符轉(zhuǎn)為可以安全保存的mssql值，比如a'a轉(zhuǎn)為a''a*/
function EnCode($str) {
return str_replace(''', '''', str_replace('', '', $str));
}
/*將可以安全保存的mssql值轉(zhuǎn)為正常的值，比如a''a轉(zhuǎn)為a'a*/
function DeCode($str) {
return str_replace('''', ''', $str);
}
/*將對應(yīng)的列和值生成對應(yīng)的insert語句，如：array('id' => 1, 'name' => 'name')返回([id], [name]) VALUES (1, 'name')*/
function InsertSql($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 ' . $vstr;
} else {
return '';
}
} else {
return '';
}
}
/*將對應(yīng)的列和值生成對應(yīng)的insert語句，如：array('id' => 1, 'name' => 'name')返回[id] = 1, [name] = 'name'*/
function UpdateSql($uarr) {
if (is_array($uarr)) {
$ustr = '';
foreach ($uarr as $key => $val) {
$ustr .= '[' . $key . '] = '' . $val . '', ';
}
if ($ustr) {
return substr($ustr, 0, -2);
} else {
return '';
}
} else {
return '';
}
}
/*返回對應(yīng)的查詢標(biāo)識的結(jié)果的一行*/
function GetRow($query, $result_type = MSSQL_ASSOC) {
return mssql_fetch_array($query, $result_type);
}
/*清空查詢結(jié)果所占用的內(nèi)存資源*/
function Clear($query) {
return mssql_free_result($query);
}
/*關(guān)閉數(shù)據(jù)庫*/
function Close() {
return mssql_close($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");
}
}
?>
希望本文所述對大家PHP程序設(shè)計有所幫助。