Popular PHP Interview Questions and Answer for Fresher

Here in this article we sharing Popular php interview questions and answer for fresher or experience. There are lot of questions which are asks in a php interview from many companies. We hope you get these PHP interview questions and answers helpful and it will also help you to expand your essential PHP skills. Let’s see the best and latest php interview questions with answer list.

PHP Interview Questions and Answer

1) What is PHP?

PHP stands for Hypertext Preprocessor. PHP is a web language based on scripts that allow developers to dynamically create generated web pages. PHP has various frameworks and CMS for developing dynamic and interactive websites. It supports many databases like MySQL, Oracle, Sybase, Solid, PostgreSQL, generic ODBC etc.

Why do we use PHP?

There are several benefits of using PHP. It is totally free to use. So anyone can use PHP without any cost and host the site at a minimal cost. It supports multiple databases. The most commonly used database is MySQL which is also free to use.

What are the popular frameworks in PHP This Time?

  • Laravel
  • CodeIgniter
  • Symfony
  • CakePHP
  • Yii

Difference Between echo print and print_r in PHP

The most common built-in output functions in PHP are: echo, print, printf, print_r, var_dump, and var_export. They are all designed to output data, albeit, in slightly different ways. Which is why there are specific use cases associated with each function.

echo: echo actually a language construct, so it doesn’t require you to use brackets. You just write echo ‘string’; or echo $something;, etc. It also supports multiple comma-delimited values, making it handy in a variety of use cases; e.g., echo ‘string1’, ‘string2’, ‘string3’;. Note that echo returns null (nothing).

print: It is not a real function, it’s nearly the same as echo, with the difference being that it accepts only one argument and always returns the same thing: 1. its print outputs only the strings. It is slow compared to that of echo.

print_r: print_r() is a regular function. print_r() function is a built-in function in PHP and is used to print or display information stored in a variable. It outputs the detailed information about the parameter in a format with its type (of an array or an object), which can be easily understandable by humans.  

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