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PHP, "Hypertext Preprocessor", is a general open source scripting language. PHP is a scripting language executed on the server side. It is similar to C language and is a commonly used website programming language. PHP's unique syntax mixes C, Java, Perl, and PHP's own syntax. It is conducive to learning and widely used. It is mainly suitable for the field of web development.
What does the php source code mean?
PHP source code is a program written in PHP scripting language, which belongs to computer programming. If a PHP web page contains PHP code, then open the entire original file of the web page with an editor, or open it with Notepad, and what you will see is the PHP source code.
A brief introduction to PHP
PHP is a server-based scripting language for creating dynamic websites. You can use PHP and HTML to generate websites. Home page. When a visitor opens the homepage, the server executes the PHP command and sends the execution results to the visitor's browser, similar to ASP and CoildFusion.
However, the difference between PHP and them is that PHP is open source and cross-platform. PHP can run on WINDOWS NT and multiple versions of UNIX.
It does not require any pre-processing and provides fast feedback results, and it does not require mod_perl adjustments to reduce the memory image of your server. PHP consumes fewer resources. When PHP is used as part of the Apache web server, there is no need to call external binaries to run the code, and the server does not need to bear any additional burden.
In addition to being able to manipulate your pages, PHP can also send HIIP headers. You can set cookies, manage digital signatures and redirect users, and it provides excellent connectivity to other databases (also ODBC), integrating various external libraries to do anything from parsing XML with PDF documents.
With PHP, there is no need for a special development environment and IDE. You can <? php
As the beginning of a program block, you can start it with ? >
As the end of the PHP code block, of course you can also configure PHP with tags or even in ASP format, and PHP will handle everything between those tags.
PHP’s programming language is similar to C and Perl. You don't have to declare any variables before using them, and creating arrays and hashes is a simple matter. PHP also has some object-oriented features that can provide great help in organizing and packaging your code.
Although PHP can run quickly in Apache, there are some instruction sets in the PHP website that are used to seamlessly integrate Microsoft IIS and Netscape Enterprise Server.
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