Why is software developed with PHP so much cheaper than JAVA? Existence is reasonable

Comparison of JAVA and PHP
Keywords: Comparison of java and php
E-commerce software on the market can basically be summarized into two camps, namely the PHP camp and the JAVA camp . However, for users who have not been exposed to e-commerce for a long time, they often see only their appearances and obvious price differences, but it is difficult to see the actual differences between them. In fact, the fact that PHP + MYSQL is not valuable is not limited to e-commerce software, but that overall software developed by PHP + MYSQL is not as valuable as software developed by JAVA. Why is PHP + MYSQL e-commerce not valuable? First, you must understand the difference between PHP and JAVA.
1. Comparison of the technical architecture of the system
Layering is a way to effectively organize the system, and the idea of ​​divide and conquer is a very important idea in the computer field. Under the guidance of good layering ideas, "high cohesion and low coupling" can be achieved, and specific problems can be separated, making it easier to control, extend, and allocate resources. PHP can only implement a simple distributed two-layer or three-layer architecture, while JAVA is very powerful in this regard and can implement a multi-layer network architecture. Using the MVC design pattern, e-commerce software can have a more efficient and reasonable system architecture. The backwardness of the technical architecture makes e-commerce software written in PHP inherently deficient, and the acquired disadvantages cannot be compensated for. The gap between the system and e-commerce software systems written in JAVA is getting wider and wider in terms of scalability and demand adaptability. The gap in architecture has destined that the e-commerce done by PHP is at best a small business, and it has never been able to compete with ladies like JAVA on the same stage.
2. Database access comparison
PHP can be compiled into functions that connect to many databases. You will write your own peripheral functions to access the database indirectly. In this way, when the database used is changed, the coding can be easily modified to adapt to such changes. However, the database interface support provided by PHP is not unified with each other. For example, the interfaces to Oracle, MySQL, and SQL2000 are different from each other. Since PHP uses different database access interfaces for different databases, the database access code is not very versatile.
3. Security comparison
In the face of JAVA, PHP has lost many advantages. Especially outstanding in the security of code. The PHP development program can be easily modified after others get the code. Programs developed by JAVA are more secure because they cannot see the complete source code and can only see some compiled class files. Coupled with the advantages of system architecture, PHP and JAVA are far apart in terms of security. If we have to compare PHP and JAVA in terms of security, if the same thief patronizes PHP, he will just use it and change it casually. . When you visit JAVA, you will find police guards and an automatic alarm device inside, even if you break through many obstacles and enter the room. Those valuable things are all placed in the encrypted safe, and they can only return with disappointment and disappointment.
4. Foresight and scalability
On the whole, PHP is suitable for small and medium-sized systems, while JAVA is suitable for large systems. PHP can handle a single event well, but it is not suitable for completing multiple concurrent events with a high degree of integration. Why is PHP suitable for small and medium-sized systems but not for large systems?
First of all, PHP lacks multi-layer structure support. For large system load sites, distributed computing can only be used. Separate the database, application logic layer and presentation logic layer from each other, and separate the same layers based on traffic to form a two-dimensional array. PHP lacks exactly this support.
Secondly, the database interface provided by PHP is not unified, and it takes a lot of effort to unify data from multiple different databases. JAVA does not have this defect. It can obtain scale support through SUN JAVA's JAVA Class and EJB, and obtain structural support through EJB/CORBA and Application Servers of many manufacturers. Such as ProBIZ's Merchant one e-commerce software product series.
If PHP is compared to a general, it has the ability to stand alone. Then JAVA is a talented person, with good foresight and scalability, and strong overall layout and collaborative capabilities. Able to command thousands of troops and horses, and finally compete in the Central Plains.