Yes, a major part of the internet is web pages that can be viewed using a browser of your choice such as Internet Explorer or Firefox. PHP is one of many languages that can be used to generate dynamic webpages to displayed to website users. Most users of the internet don't write PHP, but they do access pages that are generated using it.
PHP is a Server side scripting language used for web development.The programs in php will be run on the server and only the output is sent to the internet browser.
The PHP website has a comprehensive online manual that can explain most aspects of PHP, including its installation. See the related links for a constantly-updated PHP installation guide.
Use mysql_connect() php function to connect to the mysql.Please refer related link for more details.
In PHP, semantics refer to the meaning of code or how statements are interpreted by the PHP engine. It involves understanding how code functions and interacts with other elements in a PHP script. Proper semantics ensure that the code behaves as expected and follows the established rules of the PHP language.
The company that owns the engine behind PHP is called Zend. Find them at Zend.com The language itself is controlled by the PHP Language Group. Licensing fun over at the PHP homepage: see related link (below).
Backticks in PHP are simply shorthand for calling shell_exec on their contents, as in most Unix shells. See the related link.
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You can find PHP documentation on the official PHP website at php.net. The website has comprehensive documentation on PHP functions, classes, and features, as well as user-contributed notes and examples.
A browser (firefox, chrome, opera, internet explorer etc) cannot read anything but html. The job of converting php code into html code is handled by a PHP Server (Apache, IIS or others).
This is fairly hard to do. PHP has nearly endless possibilities.PHP can be an Object-Oriented or Function-Oriented programming language. Though PHP is mostly used for web design, it is possible to use PHP outside of the internet, but this is complicated.PHP can do almost anything from performing simple arithmetic calculations, to providing uses with information, user accounts, and more. You can edit pictures with PHP, look up IP addresses, and handle different strings. You can even pull and alter information of mySQL databases!I highly recommend PHP, but it cannot be used if you don't have PHP installed. PHP is a free software, and can be download from php.net. You can use PHP on the internet though, as long as it is installed on that particular web server. Most free hosting websites already have PHP installed.
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Yes, Apache Tomcat supports the installation and usage of PHP (of any version below 5, not including 5). See the related links for an official Tomcat-PHP installation guide.