PHP is an open source, server side scripting language introduced by Rasmus Lerdorf. It is lightweight, fast and easy to learn programming language. PHP supports multiple databases such as MySQL, Oracle, and MS Access. To make a dynamic and fast web application, PHP is consider very important programming language. So it is important to choose PHP learning online books to utilize time. Top 8 PHP learning books beginner to skilled level. Advanced php programming to build a web Blogs , web pages, E-Commerce sites etc.
What are the difference between abstract class and interface? Abstract class : abstract classes are the class where one or more methods are abstract but not necessarily all method has to be abstract. Abstract methods are the methods, which are declare in its class but not define. The definition of those methods must be in its extending class. Interface : Interfaces are one type of class where all the methods are abstract. That means all the methods only declared but not defined. All the methods must be define by its implemented class.
What are the differences between PHP 5 and PHP 6 and PHP 7? The change is the best route. There aren't any major as far as what you use, mysql_ was finally removed altogether, for example. The biggest change was speed. The major difference between PHP5 and PHP7 is the performance, by upgrading to PHP7, you will see a huge increase in the performance. php7 can boost your application development by using the latest resources. PHP 7 recent changes have made it more mature.
PHP is a server side language. PHP is an important part of web application. It is rich and secure web languate to build web application. Every web applicaton developer should have the base knowledge in PHP. Here we come to assist you most common interview question for job preparation.PHP is free, widely used Programming language and good alternative of Microsoft's ASP. PHP has vast source such as PHP has many Frameworks and CMS. For example Wordpress, Oscommerce are the most popular CSM of PHP