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PHP is a general-purpose scripting language that is especially suited to server-side web development, in which case PHP generally runs on a web server. Any PHP code in a requested file is executed by the PHP runtime, usually to create dynamic web page content or dynamic images used on websites or elsewhere. [281]
The Zend Engine is a compiler and runtime environment for the PHP scripting language and consists of the Zend Virtual Machine, which is composed of the Zend Compiler and the Zend Executor, that compiles and executes the PHP code. [2] It was originally developed by Andi Gutmans and Zeev Suraski while they were students at the Technion – Israel ...
The programming languages applied to deliver dynamic web content, however, vary vastly between sites. Programming languages used in most popular websites* Websites
Server-side scripting is a technique used in web development which involves employing scripts on a web server which produces a response customized for each user's (client's) request to the website. Scripts can be written in any of a number of server-side scripting languages that are available (see below). Server-side scripting is distinguished ...
Dynamic web page: example of server-side scripting (PHP and MySQL). A dynamic web page is a web page constructed at runtime (during software execution), as opposed to a static web page, delivered as it is stored. A server-side dynamic web page is a web page whose construction is controlled by an application server processing server-side scripts.
PHP generally follows C syntax, with exceptions and enhancements for its main use in web development, which makes heavy use of string manipulation. PHP variables must be prefixed by " $ ". This allows PHP to perform string interpolation in double quoted strings, where backslash is supported as an escape character.
In computing, a script is a relatively short and simple set of instructions that typically automate an otherwise manual process. The act of writing a script is called scripting. Scripting language or script language describes a programming language that it is used for a script. Scripts are usually interpreted rather than compiled.
A key element of server-side programming is server-side scripting, which allows the server to react to client requests in real time. Some popular server-side languages are: PHP: PHP is a widely-used, open-source server-side scripting language. It is embedded in HTML code and is particularly well-suited for web development.