Learn some of the knowledge that PHP has to learn

Everyone's success is in exchange for hard work.

First, the basic knowledge of the network

IP Address: Internet Protocol address refers to the Internet Protocol addresses, consisting of binary system, (IPV4 is a 32-bit binary), we artificially divided it into four segments, 8 bits per segment, by decimal, decimal between (.) Separate. For example: 192.168.7.100, because IPv4 is represented by a 32-bit binary, the number of IPs that can be represented is 2 of 32---4294967296

Second, view the IP address of the machine

Under CMD, typing the following command: Ipconfig-all as shown

Third, a special IP address

127.0.0.1------refers to the machine itself,

Function: Used to test the functionality of the service, or to test whether the network configuration of the machine has a OH problem.

Features: can only be accessed by their own, is inaccessible to people.

Four, the MAC address----Physical address, refers to the network card's physical address, is unique, cannot be modified. To view the MAC address method:

Five, domain name

Domain name is actually equivalent to the IP address of a vest, and the domain name is unique, for example: www.baidu.com baidu.com is the domain name, we can ping the command to view the IP address of the domain name, for example:

Vi. DNS---Domain Name System

Function: Converts a domain name to an IP address, which is a mapping relationship between the domain name and the IP in DNS.

Viewing the host file for native DNS can be seen as:

The first step:

Click OK to enter the second step.

Step Two:

In the stand-alone etc into the third step

Step Three:

Open the host file through notepad++ as shown in the following:

Summary: If there is something wrong, welcome you to correct, thank you!!

Learn some of the knowledge that PHP has to learn