PHP得到mssql的存储过程的输出参数功能实现
在开发过程中可能会遇到无法取得MSSQL存储过程的输出参数,很多朋友都不知道该怎么办,本文将详细介绍PHP得到mssql的存储过程的输出参数功能实现,需要了解的朋友可以参考下
复制代码 代码如下:
$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;
?>
下面这些是从别的地方看到的。
小麻烦:
我们按照惯例使用了一个MS Sql Server的存储过程procA,它给出了一个输出参数nReturn,
而且返回了一个结果集。
在如何让PHP调用这个procA的时候,我们遭遇了一点小麻烦。
鱼肉和熊掌不可兼得:
我们本来希望这样的代码能够既得到输出参数,又得到返回的结果集:
复制代码 代码如下:
// 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);
虽然得到了结果集,但是,这样$nReturn参数是拿不到输出参数的。
如果把最后一句话改为:
$db_mssql->Query_ID = mssql_execute($stmt,true);
输出参数倒是拿到了,结果集又没有了。
好像是一个鱼肉和熊掌不可兼得的样子。
难道PHP连这个都做不到?PHP手册中也没有讲这个问题。
来自于PHP维护者的解释:
原本我们这种调用办法是PHP 4.3版本之前肯定是支持的。
“但是,自从PHP 4.3版本之后,”他们说,“为了能够兼容存储过程返回多个结果集,PHP改变这个特性。”
“如果你不需要结果集,你应该设置mssql_execute的第二个可选参数为TRUE,这样mssql_execute方法之后你就可以得到输出参数了。”
“如果你需要返回的结果集们,你应该为每一个结果集调用一次mssql_next_result。在最后一个结果集返回之后,你再调用mssql_next_result就会得到返回值FALSE,这时候,你就可以访问输出参数了。”
解决:
在最后我们补上一句话:
// After the last result has been returned the return value will have the value returned by the stored procedure.
mssql_next_result($db_mssql->Query_ID);
立刻,魔法生效了:
PHP填充了正确的输出参数到$nRetVal里。

Hot AI Tools

Undresser.AI Undress
AI-powered app for creating realistic nude photos

AI Clothes Remover
Online AI tool for removing clothes from photos.

Undress AI Tool
Undress images for free

Clothoff.io
AI clothes remover

AI Hentai Generator
Generate AI Hentai for free.

Hot Article

Hot Tools

Notepad++7.3.1
Easy-to-use and free code editor

SublimeText3 Chinese version
Chinese version, very easy to use

Zend Studio 13.0.1
Powerful PHP integrated development environment

Dreamweaver CS6
Visual web development tools

SublimeText3 Mac version
God-level code editing software (SublimeText3)

Hot Topics

In this chapter, we will understand the Environment Variables, General Configuration, Database Configuration and Email Configuration in CakePHP.

PHP 8.4 brings several new features, security improvements, and performance improvements with healthy amounts of feature deprecations and removals. This guide explains how to install PHP 8.4 or upgrade to PHP 8.4 on Ubuntu, Debian, or their derivati

To work with date and time in cakephp4, we are going to make use of the available FrozenTime class.

To work on file upload we are going to use the form helper. Here, is an example for file upload.

In this chapter, we are going to learn the following topics related to routing ?

CakePHP is an open-source framework for PHP. It is intended to make developing, deploying and maintaining applications much easier. CakePHP is based on a MVC-like architecture that is both powerful and easy to grasp. Models, Views, and Controllers gu

Visual Studio Code, also known as VS Code, is a free source code editor — or integrated development environment (IDE) — available for all major operating systems. With a large collection of extensions for many programming languages, VS Code can be c

Validator can be created by adding the following two lines in the controller.
