Is php a development language?

php is a development language, a general open source scripting language, also known as "hypertext preprocessor"; php is an open source software project with a large audience and many developers. Using php can Save a lot of genuine licensing fees; PHP is also a weakly typed language, with a high program compilation pass rate and faster development efficiency than other strongly typed languages.

The operating environment of this tutorial: Windows 10 system, PHP version 8.1, DELL G3 computer

Is php a development language?

yes.

PHP is a general open source scripting language, also known as "hypertext preprocessor". PHP is widely used in the development of Web websites, and it can be embedded into HTML for use. The syntax of PHP absorbs the characteristics of different development languages ​​such as C language, Java and Perl, making it easier for developers to learn.

PHP has the Class keyword similar to JAVA. Because it does not require a virtual machine, it is 5 times faster than JAVA. PHP can be used not only to develop web applications but also general applications.

Since the source code of the PHP interpreter is public, websites with higher security factors can change the PHP interpreter themselves. In addition, the use of the PHP runtime environment is also free. PHP can establish connections with many mainstream databases, such as MySQL, ODBC, Oracle, etc. PHP uses different compiled functions to establish connections with these databases. PHPLIB is a commonly used base library provided for general transactions.

Language features

• Open source and free

PHP is a platform with a large audience and many developers Open source software project, Linux Nginx Mysql PHP is its classic installation and deployment method. All related software are open source and free, so using PHP can save a lot of genuine licensing fees. However, as an open source software, PHP lacks the support background of large technology companies, and its pessimism on the Internet is also enduring. However, the reality of its continuous iteration and performance enhancement is inspiring. The PHP community uses practical actions to Give a strong reply to all kinds of doubts.

• Fast and efficient

The core of PHP is written in C language and is very efficient. You can use C language to develop high-performance extension components; The core of PHP contains more than 1,000 built-in functions, with comprehensive functions and simple out-of-box program code; PHP arrays support dynamic expansion and associative arrays with numbers, strings or mixed key names, which can greatly improve development efficiency ; PHP is a weakly typed language, with a high program compilation pass rate and faster development efficiency than other strongly typed languages; PHP is naturally hot-deployed, and hot deployment is completed when the code file is covered in the php-fpm operating mode; PHP has been developed for more than 20 years , you can find a large number of reference materials on the Internet for reference and study.

• Performance improvement

The higher the PHP version, the higher its overall performance. According to the official introduction, the performance of PHP7.0.0 is better than that of PHP5.6 Improved by 2 times, PHP7.4 is already about 30% faster than PHP7.0, and PHP8.0 has improved performance by about 10% compared to PHP7.4. PHP 8.0 introduces JIT compiler features and adds a variety of new language features such as named parameters, union types, annotations, Constructor Property Promotion, match expressions, nullsafe operators, and improvements to the type system, error handling, and consistency . PHP has its own core development team, which maintains a frequency of releasing one major version every five years and two minor versions every month.

Each platform has a corresponding php interpreter version, which means that the binary code (PHP interpreter) of the target platform is compiled for different platforms. Programs developed by php can run on windows, linux, on multiple operating systems such as unix.

• Resident memory

In php-cli mode, the program can be resident in memory, and various variables and database connections can be stored in the memory for a long time. To implement resource reuse in memory, a common approach is to write a cli framework in combination with the swoole component.

• Page life cycle

In php-fpm mode, all variables are page-level, whether they are global variables or classes Static members will be cleared after the page is executed. They require low programmer skills and occupy very little memory. They are especially suitable for the development of small and medium-sized systems.

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