Summary of learning the PHP programming language

 

1.Layout problems

 

CSSStyle Sheet priority

If a setting in a style sheet conflicts with a webpage setting, the priority of the style sheet prevails.

InCSSDetailed settings for various style formats in the style sheet"(Rename the new style format and add itCSSStyle Sheet).

 

2.Table Problems(Pixels and percentage)

 

Use "pixel" to fix the layout of the most peripheral table, and use "percentage" or "Free stretch" to design layout cells or nested tables and set up "interval images" to locate the boundaries of the table.

 

3.Server problems

 

WebServer:WinUse the built-inIISServer software,LinuxCommonApacheServer software.

The server running environment is only valid for the server running folder.

 

4.Database Installation Problems

 

After the database is installed, you will often be prompted "unable to connect to the Database" or "unable to find the Database". You need to install ODBC (connection between the database and webpage output ).Program.

After the database and ODBC are correctly installed, an "Unknown error" or "the current database is not supported" prompt appears, the reason is that the "connection file between the dynamic web page technical interpreter and the database" is not installed. (This connection file can be found in the file of the relevant dynamic web page technical interpreter)

ODBCPrograms are provided by database developers;

The interpreter and Database Connection Program are provided by the interpreter developer;

 

5.PHPSoftware Download

 

Www.php.net/downloads.php

Http://www.cnphpbb.com /(Chinese VersionPhpBBSoftware)

 

6.InLinuxCommon server software

 

Apache: Web ServerHttp://www.apache.org/dist/httpdDownload, open source codeHTTPServer, multi-platform, available throughAPIExtension,Perl/PythonThe interpreter is compiled. Through the compilation module to achieve many technical support, fromProgramming LanguagePHPSupport,The Identity Authentication Module is as follows:Mod_access,Mod_authAndMod_digest, Common language interface support such:Perl,Python,TCL.

MySQL: Database ServerHttp://www.mysql.com/downloads/index.html

PHP: Server-side scripting languageHttp://www.php.net/downloads.php

ProFTPD:FTPServerHttp://www.proftpd.org/

Vsftpd: Extremely secureFTPServerHttp://www.rpmfind.net/linux/redhat/9/en/ OS /i386/RedHat/RPMS

Unrealircd:IRCServerHttp://www.unrealircd.com/downloads.phpThis is a free software for creating chat servers. You can easily create chat rooms.

Pptpd:VPNServerHttp://prdownloads.sourceforge.net/poptop.

Jabberd Quickstart: Instant Messaging ServerHttp://jabberd.jabberstudio.org/quickstartIt is compatibleJabberProtocol client and server componentsTCPSocket connection.

Ample: Network Station servers and various types of servers(Such as: Network music ServerHttp://prdownloads.sourceforge.net/ampleDownload,AmpleUsedP2P (peer-to-peerPoint-to-Point Network Technology)Peer-to-peer networking technology.

 

7.Network Service Security

 

Website information classification:Line classification, surface classification, and hybrid classification.

FTPServer:ManyAnonymousUser name login,FTPThe server must set directory permissions, and do not open the permissions that should not be available to the shared account.

TELNET:The biggest security problem is the plaintext transmission of the user name and password used when the customer logs on.

WWWService:Its security problem is that there is a security vulnerability in the "public gateway interface program,JavascriptAndActiveSecurity issues.

Email server:ItSome programs usually useRootThe operation of the account is potentially dangerous. And role spoofing.

UsenetService:ItOfUsenetNews security issues.

NFSNetwork File System:You can connect to a remote file system. Improper configuration will be easily reinstalled.NFSFile System.

 

8.Log File Signal Analysis

 

A.Pattern Matching:Compare the collected information with the information in a known database. Low System Burden and high accuracy. However, it is necessary to constantly update the data related to new attack methods;

B.Statistical analysis:Compare the average value of measurement attributes in normal statistical conditions with the behavior of the network and system to determine.

C.Integrity Analysis:Focuses on whether a file or object has been changed. It leverages powerful encryption mechanisms(Called message digest Function)Identifies even minor changes. The disadvantage is that it is generally implemented in batches and used for post-event analysis without real-time response.

 

9.Webpage Testing

 

A.Browser testing:

Window/ResultÀOpen the "result" Panel, click "target browser check", click the menu in the upper left corner of the "result" panel, and click Settings in the pop-up menu.(Click "Browse Report" to display related reports.)

B.Resolution test:

Set the resolution in the operating system. The minimum value is800×600, The maximum value is1280×1024.

C.Testing of different operating systems:

Perform debugging in different operating system environments.

D.Link test:

Window/ResultÀOpen the "result" Panel, click "link checker", and click "Check link" to view details.

 

10.Remote login softwareSSH

 

Generally, the primary service providers will install basic services for free.LinuxSystem andSSHRemote Management Software.

AverageUNIXSystem,LinuxSystem,FreeBSDSupported SystemsSSH (Secure Shell)Application Package.ShhNot only can replaceTelnetAnd can beFTP,PopOr evenPPPProvides a secure "channel ".

ShhInitially developed by a Finnish company and subject to copyright and EncryptionAlgorithmPeople generally switch to free-of-chargeOpenSHHSoftware Package.

ShhSoftware:OpenSHHSoftware Package

ShhRemote login software:F-Secure Shh ClientSoftware

 

 

Related Learning Websites: http://www.todayonline.cn/

Netease Free Space Application website:Http://www.nease.net/