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There are three API interfaces for the connection between PHP and MySQL, namely: PHP's MySQL extension, PHP's mysqli extension, and PHP Data Objects (PDO).

Both Simple Mail Transfer Protocol(SMTP) and POP3 (or IMAP) use TCP connections to transmit mail. The purpose of using TCP is to transmit mail reliably.

The modified "Send Mail" script step dialog now supports sending mail directly via SMTP (Simple Mail Transfer Protocol, a set of criteria for sending and receiving email).

Check the file and folder size under Linux. There will be an alarm when the disk size exceeds the standard. At this time, it is a very wise choice to master the df and du commands.

Today, when running a case with irunner, there are too many cases. If the unix home exceeds the quota, the running case will report an error.

The principle of CC attack is that the attacker controls some hosts to send a large number of packets to the other server, causing the server resources to run out until the server crashes.

CC attack, translated as challenge collapsar, is one of DDoS attacks and one of the most common network attacks. I

The traffic of CC attack is not very high, but it is very destructive, which directly causes the system service to hang up and cannot be served normally.

The difference between oracle and mysql: mysql: MySQL mainly uses table-level locks, oracle uses row-level locks, and the granularity of resource locks is much smaller.

The security performance of the cloud host is higher than that of the traditional server. If the daily security deployment and maintenance is done well, the long-term operation can be ensured.

The biggest feature of the relational database is the consistency of the transaction: the traditional relational database read and write operations are transactional, with the characteristics of ACID.

The security performance of the cloud host is higher than that of the traditional server. If the daily security deployment and maintenance is done well, the long-term operation can be ensured.

If you want to carry out the cloud host business, you must first solve the security problem. So how to do a good job of security operation by using cloud host?

The cloud server will generally adopt a variety of strategies to add "insurance" to the website data.

VPN is a virtual private network that allows you to connect to a private network from anywhere with an Internet connection. This is useful for both corporate users and individual users.

In addition to the more convenient reasons for enterprises to go to the cloud, there is also a more important reason is security.

VPN is a virtual private network that allows you to connect to a private network from anywhere with an Internet connection. This is useful for both corporate users and individual users.

The default data file storage directory of MYSQL is /var/lib/mysql. If you want to move the directory to /home/data, you need to perform the following steps.

When installing MySQL for the first time, it was time to install the database directory on the system disk. After using it for a period of time, the database storage capacity becomes larger.

MySQL creates a database and simply adds, deletes, and changes. We can use the create command to create a database after logging in to the MySQL service. The syntax is as follows