What does PHP mean? What is PHP used for?

php is a general open source scripting language. Its syntax absorbs the characteristics of C language, Java and Perl, and is suitable for the field of Web development. PHP embeds programs into HTML documents for execution, and the execution efficiency is higher than that of complete CGI is much more efficient at generating HTML markup; PHP can also execute compiled code.

#1.What does PHP mean?

Hypertext Preprocessor

2. What is PHP used for?

PHP is a general-purpose open source scripting language. The grammar absorbs the characteristics of C language, Java and Perl (actual extraction and reporting language), which is easy to learn and widely used. It is mainly suitable for the field of Web development. Compared with other programming languages, dynamic pages made with PHP embed programs into HTML (an application under the standard universal markup language) document for execution, and the execution efficiency is higher than that of CGI (Common Gateway Interface) which completely generates HTML markup. ) is much higher; PHP can also execute compiled code. Compilation can compile and optimize code running, making the code run faster.

3.Why does PHP use Mysql?

When the website gets bigger and bigger, you may encounter such problems:

①The website contains too many things, making it impossible for visitors to get what they want quickly. Things, this problem is fatal to a website to some extent;

②Visitors want to provide you with information, and this information must be saved for later use.

Both of the above two problems can be solved through the database!

Why use PHP and Mysql? Almost all major commercial website databases are based on SQL. Probably the most popular of these is Oracle. It's powerful and, of course, cheap. SQL is not an application, but a language. It is the abbreviation of Structured Query Language (Structured Query Language), which is used to operate and query the database.

In recent years, a number of companies have developed "open code" SQL applications, perhaps the most famous of which is MySQL. It is not only free, but for general small and medium-sized database applications, its performance is not inferior to Oracle.
To run MySQL on a website, you need a scripting language to interact with the database, so PHP uses Mysql.

4. Advantages of PHP+Mysql

• Mature technology and rapid development

PHP+ MySQL is currently the most mature, stable and secure enterprise-level WEB development technology, and is widely used in very large sites (for example: Sendong front-end uses PHP, you can enter: www.sendong.com/index.php). Its mature architecture, stable performance, embedded development method, and concise syntax enable the system to be developed quickly.

• Efficient execution, safe and reliable

PHP has good security performance, and the account and password are encrypted Technology to ensure the security of data account information. Key data uses multi-layer encryption technology to effectively ensure data security. PHP+MySQL can run across UNIX, Linux, Windows NT and other platforms, reducing the risk of system and data migration.

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