PHP FAQ: Every developer who thinks about learning the PHP language should understand its benefits. Even if it is the mother of many other languages, it is still helpful to track the updates and improve your career possibilities. Many educational platforms deliver high-quality programs to learn online. Actually, it is always good for students to look for reliable programming services where they can ask specialists, “Can you help me do my PHP homework?” and use a sample as a basis for further study. In our article, you can find fully revealed answers to 12 questions about why you should pay attention to PHP and foster your professional growth.
1) What is PHP?
This is one of the fundamental programming languages built on an object-oriented principle covering many web server needs. It is created to modify databases with specific functions as adding, deleting, and re-arranging elements.
If you want to scrape any PHP website, then you will need a PHP web scraper. Believe it or not, but PHP and web scraping have much in common: just like PHP, Web Scraping can be used in a quick and dirty way, more elaborately, and enhanced with the help of additional tools and services.
2) When was PHP established?
It first appeared in 1995 when the Unet group was discussing the deployment of code debugging. Originally, PHP was developed earlier, in 1944 by Danish-Canadian software engineer Rasmus Lerdorf.
3) What are PHP’s purposes?
PHP is a language that perfectly maintains databases. When you need to collect and organize data, PHP will do it better than others. It was created to deploy web servers and provide perfect integration of software data with hardware networking. This language makes server-side scripting more dynamic and lets web platforms process the request with a PHP interpreter.
4) Can PHP interact with other languages?
5) Is PHP popular?
PHP is still used for programming in such big companies as Facebook, Tumblr, WordPress, Digg, Joomla, and many more. It is specified for better management of web content systems and serves 50.3% of all websites on the web (based on facts from Wikipedia).
6) Why is PEAR useful in PHP?
PEAR is a framework that stands for saving reusable components. It insists on libraries and code fragments that help to send specific commands and install necessary packages automatically.
7) What is a case-sensitive language, and how does PHP relate to it?
Case sensitivity in programming language means that developers should write code exactly as keywords should be reported to call necessary functions. Same concerns variables, function names, and any other markers should always be written with the capitalization of a concrete letter. The keyword, for example, must be typed all lower case, not starting with upper case or all written in Caps Lock.
8) What does escaping in PHP mean?
When you need to differentiate the code’s part, you need to extract some elements in the page. The method of extracting string that helps to reduce double meaning in quotes, is called “escaping.”
9) What are the main features of PHP variables?
- When you use variables before assigning them, they have default values.
- PHP variables don’t have intrinsic types, which means that variable can’t define how it will be used: as a characters string or to store the number.
- Variables in PHP don’t need to be declared before function.
- Variable’s value is the value of the latest operation.
- All variables in PHP are marked with a dollar sign ($).
- Variables are marked with the = operator, the assessed expression on the right-hand side, and the variable on the left.
10) What data types does PHP have?
PHP insists on eight data types. Generally, each of them is variables, classes, values collections, characters, and numbers. Still, you need to remember these elements: integers, doubles, booleans, NULL, strings, arrays, objects, and resources.
11) What are the differences between PHP variables and constants?
- A dollar ($) sign shouldn’t be put before a constant, while a variable must be used in it.
- Define constants using the define() function but detect variables by a simple operation.
- Access and define constants anywhere without following variable scoping rules. Default PHP assignments can only create and access variables within their own scope.
- Constants are not redefined or undefined. Still, you can easily modify variables for each path individually.
12) What do a final method and a final class mean?
If you use the keyword “final” in a method declaration, you indicate that sub-classes couldn’t deny it. You can’t also add a class defined as a “final” to any subclass. It is beneficial for immutable types like string. In this case, all necessary characteristics can’t be described as final, but methods and classes can.
Congrats on a great choice of upgrading your knowledge of the PHP language! Hopefully, these 12 answers will lead you to a better understanding that PHP is actually not so terrifying. Maintain functions easily to organize databases and establish relatedness to many programming languages based on PHP.