PHP调用MySQL存储过程并返回值的方法_php技巧
本文实例讲述了php中调用执行mysql存储过程然后返回由存储过程返回的值,分享给大家供大家参考。具体分析如下:
调用存储过程的方法.
a。如果存储过程有 IN/INOUT参数,声明一个变量,输入参数给存储过程,该变量是一对,一个php变量,也可以不必,只是没有php变量时,没有办法进行动态输入,一个Mysql变量.
b。如果存储过程有OUT变量,声明一个Mysql变量,mysql变量的声明比较特殊,必须让mysql服务器知道此变量的存在,其实也就是执行一条mysql语句,入set @mysqlvar=$phpvar ;
c。使用mysql_query()/mysql_db_query()执行mysql 变量声明语句。
代码如下:
这样,在mysql服务器里面就有一个变量,@mysqlar,如果时IN参数,那么其值可以有phpar传入.
例,利用mysqli函数实例,我们先可在mysql创建一个存储过程,代码如下:
mysql> CREATE PROCEDURE employee_list (OUT param1 INT)
-> BEGIN
-> SELECT COUNT(*) INTO param1 FROM t;
-> END
-> //
Query OK, 0 rows affected (0.00 sec)
然后在php中如下写,代码如下:
Employee listing
$hostname = "localhost";
$username = "root";
$password = "secret";
$database = "prod";
if (IsSet ($_POST['submit'])) {
$dbh = new mysqli($hostname, $username, $password, $database);
/* check connection */
if (mysqli_connect_errno()) {
printf("Connect failed: %sn", mysqli_connect_error());
exit ();
}
$dept_id = $_POST['dept_id'];
if ($result_set = $dbh->query("call employee_list( $dept_id )")) {
print ('
Employee_id | Surname | Firstname |
%s | %s | %s |
$dbh->close();
}
?>
核心代码就是,代码如下:
这句employee_list是我们的mysql存储过程.
希望本文所述对大家的php程序设计有所帮助。

PHPidentifiesauser'ssessionusingsessioncookiesandsessionIDs.1)Whensession_start()iscalled,PHPgeneratesauniquesessionIDstoredinacookienamedPHPSESSIDontheuser'sbrowser.2)ThisIDallowsPHPtoretrievesessiondatafromtheserver.

The security of PHP sessions can be achieved through the following measures: 1. Use session_regenerate_id() to regenerate the session ID when the user logs in or is an important operation. 2. Encrypt the transmission session ID through the HTTPS protocol. 3. Use session_save_path() to specify the secure directory to store session data and set permissions correctly.

PHPsessionfilesarestoredinthedirectoryspecifiedbysession.save_path,typically/tmponUnix-likesystemsorC:\Windows\TemponWindows.Tocustomizethis:1)Usesession_save_path()tosetacustomdirectory,ensuringit'swritable;2)Verifythecustomdirectoryexistsandiswrita

ToretrievedatafromaPHPsession,startthesessionwithsession_start()andaccessvariablesinthe$_SESSIONarray.Forexample:1)Startthesession:session_start().2)Retrievedata:$username=$_SESSION['username'];echo"Welcome,".$username;.Sessionsareserver-si

The steps to build an efficient shopping cart system using sessions include: 1) Understand the definition and function of the session. The session is a server-side storage mechanism used to maintain user status across requests; 2) Implement basic session management, such as adding products to the shopping cart; 3) Expand to advanced usage, supporting product quantity management and deletion; 4) Optimize performance and security, by persisting session data and using secure session identifiers.

The article explains how to create, implement, and use interfaces in PHP, focusing on their benefits for code organization and maintainability.

The article discusses the differences between crypt() and password_hash() in PHP for password hashing, focusing on their implementation, security, and suitability for modern web applications.

Article discusses preventing Cross-Site Scripting (XSS) in PHP through input validation, output encoding, and using tools like OWASP ESAPI and HTML Purifier.


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

Video Face Swap
Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Article

Hot Tools

SublimeText3 English version
Recommended: Win version, supports code prompts!

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

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

SecLists
SecLists is the ultimate security tester's companion. It is a collection of various types of lists that are frequently used during security assessments, all in one place. SecLists helps make security testing more efficient and productive by conveniently providing all the lists a security tester might need. List types include usernames, passwords, URLs, fuzzing payloads, sensitive data patterns, web shells, and more. The tester can simply pull this repository onto a new test machine and he will have access to every type of list he needs.

SAP NetWeaver Server Adapter for Eclipse
Integrate Eclipse with SAP NetWeaver application server.
