PHP stands for Hypertext PreProcessor. It is a general purpose server side scripting language which is particularly suited for web development and can be embedded into HTML. PHP script is always executes on the server. Only the end result is sent to the browser.
The PHP script is embedded in <?php and ?> . This is the instruction to the web server (usually Apache web server) to execute PHP code. The functionality is performed and result of expressions, echo statement etc., is being executed by the web server and the server in turn returns the result of echo statement, interacts with database etc. Using PHP, thousands web pages can be uploaded, being it is dynamic.
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