Use the new PHP plug-in to implement MySQL-based transactions. read about using the new PHP plug-in to implement MySQL-based transactions. transaction processing support has been the wish of most MySQL developers for a long time, with the release of
Transaction processing support has been the wish of most MySQL developers for a long time. With the release of MySQL 4.0, this wish was finally realized. Shortly after MySQL 4.0, PHP 5.x with a new MySQL plug-in was also released. This new plug-in,
Use the new PHP plug-in to implement MySQL-based transactions. Transaction processing support has been the wish of most MySQL developers for a long time. with the release of MySQL4.0, this wish was finally realized. Soon after MySQL4.0
Transaction
Transaction processing support has been the wish of most MySQL developers for a long time. With the release of MySQL 4.0, this wish was finally realized. Shortly after MySQL 4.0, PHP 5.x with a new MySQL plug-in was also released. This new plug-in,
Original DBI module installation Tutorial:
1.Install First, I use mysql for testing. You need to install the mysql database on your machine.Then execute:Gem install mysql
Download ruby-DBI from rubyforge, decompress it, and run the following command
Note: When connecting using the database specified by the SID, the database is not specified in the connection.
#!/usr/bin/perl use strict;
Use warnings;
Use DBI;
My $db _name= "geneva_admin";
My $db _passwd= "geneva_admin"; My $dbh
Most of the operations with PHP are working with a variety of databases, including Mysql,redis,memcache and other relational and relational databases, so an application will have a large number of connections to the database operation, if not a
//Use PDO to connect to MySQL databaseClass pdo_con{var $dsn = ' mysql:dbname=test; host:127.0.0.1 ';
var $user = ' root '; var $password = '; var $opt = array (pdo::attr_persistent=>true); var $dbh; function __construct () {try{$this->dbh
I just transferred to php. please help me write code for the segment database query class. Hello, I first switched to php and wanted to create a database operation class with a pdo connection, but I don't know how to call php, please give us some
It is to sort out PHPPDO operations. Simplify the operation process. More details: git. oschina. netyoukuiyuanyky_testblobmasterclasspdo.class.php click the link to join the group [development discussion group]: jq.qq.com? _ Wv1027gt; www. oschina.
I. Use of security issues in UDF
For example, execute an SQL statement to view the contents of the/etc/passwd file:
The main use of the Load_file () function, of course, is that the function can be disabled. The above can easily see the/
Source Text Address: http://blog.csdn.net/like_zhz/article/details/5441946Different relational models of DBI and DBD:##########################################################################The portable DBI Method:Connect establishes a connection
There are many security questions about mysql database Elevation of Privilege, such as remote Elevation of Privilege, root user Elevation of Privilege, and usage of UDF security issues. Let's take a look at these questions.
I. Usage of UDF security
A Perl application database uses the DBM package configured by itself to create and operate a database, therefore, the DBM package and other similar packages can be considered as a database extension. The other is to use the DBI package or similar
PDO gets query results in multiple ways
December 1:26 Tuesday
by Sjolzy
One of the biggest features of PDO is its flexibility, and this section describes how to get query results, including:Array (numeric or associative
The following code is rewritten using a previous class named MyPDO. The Singleton mode is introduced to ensure that the class is not repeatedly instantiated in global calls, reducing the waste of system resources, most php operations are related to
The judgment of NULL value
$t {Type1id} = $ $pref {dbh}->selectrow_array ("Select Type1id from enq1 WHERE id =
3 ");
if ($t {type1id} = = 0) {
Print "Type1id is null\n";
}
==> is not a numeric term, this statement has a problem. Numeric items are
Null Value Judgment
$ T {type1id }=$ $ Pref {DBH}-> selectrow_array ("select type1id from enq1 where id =
3 ");
If ($ t {type1id} = 0 ){
Print "type1id is null \ n ";
}
==> This statement is incorrect if it is not a numerical value. Special
To create a stored procedure annotation in SQL Server to MySQL
#!/usr/bin/perl
Use DBI;
Use Switch;
Use Encode;
Use ENCODE::CN;
My $source _name = "Sqldb";
My $source _user_name = "sa";
My $source _user_psd = "123";
My $db _name= "MySQLdb";
For now, implementing the "Database Abstraction Layer" is a great way to go, and using a database access abstraction layer like PDO is a good choice.
The PDO contains three predefined classes
The PDO contains three predefined classes, which are PDO,
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