Php A General-purpose Provide Services

PHP is a general purpose server-side scripting language for Web development was originally designed for producing dynamic web pages

. It is one of the first developed the server-side scripting language that should be integrated into the HTML source document, rather than call an external file processing. Finally, the code is interpreted on the Web server with PHP processor module that generates a web page. She also developed the command line interface and can be used in standard graphics applications. PHP can be deployed on most web servers, as well as a separate shell on almost every operating system and platform free of charge. Competitor to Microsoft's Active Server Pages (ASP) server-side script engine and similar languages, PHP is installed on more than 20 million websites and 1 million web servers.

PHP is a general-purpose scripting language that is especially suitable for server-side web development, PHP is usually where an Internet server. But the code is executed on the PHP runtime file that you want, usually to create a dynamic web page content, or dynamic images on web sites or elsewhere.

It can also be used for command-line scripting and client-side GUI applications. PHP can be deployed on most web servers, many operating systems and platforms, and can be used with many relational database management system RDBMS). It is available free of charge and PHP Group provides the complete code for users to create, customize and extend its use.

PHP primarily acts as a filter, taking input from a file or stream containing text and / or PHP instructions and brought out another stream of data, usually an HTML output. As of PHP 4 to PHP parser compiles bytecode to contribute to producing the Zend Engine, processing, improve efficiency through its interpreter predecessor.

Originally designed to create dynamic web pages, PHP is now mainly focused on server-side scripting, and it is similar to other server-side scripting languages ??that provide dynamic information from the web server to a client such as Microsoft ASP.NET, Sun Microsystems JavaServer Pages, and mod_perl. PHP has also attracted a number of systems that provide the building blocks and design structure to promote rapid application development (RAD) development. Some of these include CakePHP, Symfony, CodeIgniter, Yii Framework and the Zend Framework, offering features similar to other online applications.

PHP interpreter only execute PHP code on your separators. Everything outside the delimiters is processed with PHP.

PHP stores whole numbers are platform-dependent range, or 64-bit or 32-bit signed integer equivalent to the C language Long drill. Unsigned integers are converted to signed values ??in certain cases, such behavior is different from other programming it languages.T Standard PHP Library (SPL) is trying to solve standard problems and implements efficient data access interfaces and classes. PHP has hundreds of base functions and thousands more through extensions. These functions are well documented in the PHP site, but has an extensive library of built-in naming conventions and inconsistencies

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