Analysis on the Difference between java and php

A Brief Introduction to java

Java is a general purpose object-oriented programming language designed to generate code that can be used in the same code anywhere. This programming language is class-based, object-oriented and human-readable. It supports server-side and client-side.

Java can be compiled and interpreted. The Java compiler converts the source code into bytecode, and the java interpreter generates machine code, which is executed directly by the machine running the java program. It is reliable, distributed and portable. It can be used to develop stand-alone applications or Web-based applications.

A Brief Introduction to PHP

PHP is called hypertext preprocessor and is a server-side scripting language. It is a dynamically typed language and does not need to compile code. It was developed and designed for Web development purposes.

PHP is influenced by different programming languages, such as Perl, C + +, C, Tcl, and Java. It is mainly developed and implemented using C programming language and C + + programming language. PHP supports different cross-platform operating systems, such as Windows and UNIX class systems.

Most popular content management systems use PHP, which is currently considered the most entrenched runtime environment on the server; It can provide better search engine rating and accessibility for hosting service providers.

Main differences between Java and PHP

1. Language comparison

Java supports server-side and client-side; It is a strongly typed language, and any java code needs to be compiled correctly before execution. PHP only supports the server side; It is a dynamically typed language and does not need to compile code.

2. Grammatically

1), Notes

java support: double slash (//), /**/; PHP support: Double slash (//), # symbol, /**/.

2), case sensitive

In java, all function names, keywords, classes, variables, etc. are case sensitive; In PHP, variables are case-sensitive, while user-defined functions, classes, and keywords are case-insensitive.

3. Object concept

Java follows the concept of object-oriented. So the whole architecture is always well defined.

PHP does not follow the concept of objects. It is a simple server-side scripting language that does not have any bindings to follow the defined architecture.

4. Application Security Handling

Application security is one of the key points of any Java application; The Servlet filter, the URL encoding, and the Secure Web service are all used for Java to achieve application security. However, PHP does not have the concept of such safe handling.

5. Reflection concept

Java has had reflection concepts internally from Day 1, such as interfaces, repeating classes, abstract classes, or method concepts.

PHP 5.0 didn't have any concept of reflection before, but since PHP 5.0, it introduced this function, but it didn't make much progress compared with Java.

6. Page loading speed

PHP page loading is always faster than Java because the PHP engine does not take up as much load as the JSP engine. Therefore, complex logic requires some common visual data. Organizations prefer to use PHP.

7. Scope of application

Java is suitable for developing large-scale application systems. It has broad application prospects, easy maintenance and good reusability. However, PHP is suitable for rapid development, small and medium-sized application systems, low development cost, and can respond quickly to changing needs.

8. Database access

PHP uses different database access interfaces for different databases; While Java accesses the database through JDBC, and the interface of accessing the database is compared with Unified 1.