php取得mssql存储过程的输出参数的方法

<? 
$conn=mssql_connect("127.0.0.1","user","passwd"); 
mssql_select_db("mydb"); 
$stmt=mssql_init("pr_name",$conn);// 
$a=50001; 
mssql_bind($stmt,"RETVAL",$val,SQLVARCHAR); //用于直接返回return -103此类的值。 
mssql_bind($stmt,"@outvar",$b,SQLVARCHAR,true);//用于返回在存储过程中定义的输出参数 
mssql_bind($stmt,"@invar",$a,SQLINT4); 
$result = mssql_execute($stmt,true);//不能返回结果集，只能得到输出参数 
//$result = mssql_execute($stmt,false); //返回结果集 
//$records=mssql_fetch_array($result); 
//print_r($records); 
//mssql_next_result($result);下一个结果集，当等于FALSE的时候下一个就是输出参数 
echo $b; 
echo $val; 
?> 

<?php
// 初始化要传进存储过程的参数们: 
$nYear = 2004; 
$nPageSize = 20; 
$nPageNo = 1; 
// Initializes a stored procedure: 
$stmt = mssql_init("proc_stat_page", $db_mssql->Link_ID);  
// 绑定输入参数： 
mssql_bind($stmt, "@nReturn", $nReturn, SQLINT4, TRUE);  
mssql_bind($stmt, "@nYear", $nYear, SQLINT4);  
mssql_bind($stmt, "@nPageSize", $nPageSize, SQLINT4);  
mssql_bind($stmt, "@nPageNo", $nPageNo, SQLINT4);  
// 执行存储过程，得到QueryID： 
$db_mssql->Query_ID = mssql_execute($stmt,false); 
?>
 

$db_mssql->Query_ID = mssql_execute($stmt,true);

// After the last result has been returned the return value will have the value returned by the stored procedure.
mssql_next_result($db_mssql->Query_ID);