Evaluation of three mainstream Web development technologies: PHP

Author: Huang Dong
PHP: Personal HomePage
Why does PHP appear? It is a small application that a technician wants to use in a quick way on his personal homepage. Php appeared when he was unable to accept it. It enables a person to quickly complete a lightweight Web application under multiple operating systems. So in just a few years, php quickly upgraded its version, and found a partner named Apache in the GNU world. This finally gives php the foundation to run in the best environment, and because both products are open-source products, so you can use their source code to combine these two products in the most perfect way, just like a product. I personally think that php is a tool for free software to win the battle on the web application platform. If php does not appear, there will also be many people who think that free software represents high technical requirements for developers, hard-to-remember code, and complex tools ..... php enables a person who uses basic to quickly learn and complete the applications required by the user in a very short time.
How does one say php? If ASP is a COM, php is more accurate. It can be said that php is a pure Script translator. This is also a major reason why php is upgraded from 3 to 4. In version 4, it overwrites the syntax analyzer, thus accelerating the overall efficiency of php. In addition, you will understand why php must re-compile the program with the lib library of the corresponding system when it needs to support this or other extended functions. Because it is an authentic "translator", it translates scripts into functions to be executed and then executes them. External expansion cannot be carried out in some "dynamic loading" ways, therefore, only static code can be compiled into php (except for windows ).
Strong:
1. A development language capable of fast learning, cross-platform, and good database interaction. ASP does not match its cross-platform capability. It is its capability that gives Unix/Linux a development language comparable to ASP. Simple syntax, easy writing, and a large number of books on the market now, while a large number of codes on the Internet can be shared, it is a good start for a beginner who wants to learn some development under "Advanced Unix.
2. Work closely with Apache and other extension libraries. Php and Apache can be combined with static encoding, and can be combined with other extension libraries (except for Windows ). The biggest advantage of this method is that it maximizes the utilization of cpu time and memory, and extremely effectively utilizes apache's high-performance throughput. At the same time, external extensions are also static connections, achieving the fastest running speed. Because the interface with the database also uses this method, the local call is used, which also gives the database the best performance.
3. Good security. Since php code is open, its code has been tested by many engineers. At the same time, it can be compiled with apache to provide flexible security settings. So far, php has been recognized as a secure performance.