Please tell me the difference between Java and PHP

Java (computer programming language)

Java is an object-oriented programming language that not only absorbs the C language It also abandons the concepts such as multiple inheritance and pointers that are difficult to understand in C. Therefore, the Java language has two characteristics: powerful functions and simple and easy to use. (Recommended learning: PHP programming from entry to proficiency)

As a representative of static object-oriented programming languages, Java language excellently implements object-oriented theory, allowing programmers to think elegantly way to perform complex programming.

PHP (foreign name: PHP: Hypertext Preprocessor, Chinese name: "Hypertext Preprocessor") is a general open source scripting language. The syntax absorbs the characteristics of C language, Java and Perl, which is easy to learn and widely used. It is mainly suitable for the field of Web development. PHP's unique syntax mixes C, Java, Perl, and PHP's own syntax.

It can execute dynamic web pages faster than CGI or Perl.

Compared with other programming languages, dynamic pages made with PHP embed the program into the HTML (an application under the standard universal markup language) document for execution, and the execution efficiency is higher than that of completely generating HTML tags. CGI is much higher; PHP can also execute compiled code. Compilation can achieve encryption and optimize code running, making the code run faster.

Difference:

Java has a wider range of application scenarios, and there are relatively more people. PHP is mainly used for websites. If it is used When building a website, PHP development is relatively fast.

PHP is suitable for rapid development, small and medium-sized application systems, low development cost, and can respond quickly to changing needs. Java is suitable for developing large-scale application systems. The application prospects are relatively broad, the system is easy to maintain and has good reusability.

Comparing the technical architecture of the system, PHP can only realize a simple distributed two-layer or three-layer architecture, while JAVA is very powerful in this regard and can realize a multi-layer network architecture. .

Comparison of database access, PHP uses different database access interfaces for different databases, so the database access code is not very versatile, while Java accesses the database through JDBC and provides it through different database vendors. The database driver easily accesses the database, and the interface for accessing the database is relatively unified.

Development cost comparison, since PHP is not as good as Java in many aspects, then how can the OA products developed by PHP compete with Java products? The reason is that the Php camp generally takes the low-end route, while the Java camp takes the mid-to-high-end route. The area in between is smaller.

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