Learn PHP basics with hands-on practice in hello world in PHP, variables in PHP, functions in PHP, arrays in PHP, PHP inheritance, PHP exceptions, and more.

This interactive course introduces you to the fundamentals of PHP programming, one of the most widely used languages in web development. Starting with a simple hello world in PHP, you’ll explore the basics, including PHP output, variables in PHP, and PHP data types. You’ll also learn about PHP constants, arithmetic operators, comparison operators, logical operators, and assignment operators.

The course progresses into conditional statements in PHP, PHP switch, and various loops such as PHP for loop, PHP while loop, and more. You will then dive deeper into functions in PHP, understand PHP variable scope, and learn PHP pass by reference or value. Additionally, you’ll gain a working knowledge of strings in PHP, PHP string operations, and handling arrays in PHP, including PHP multidimensional arrays.

In the advanced sections, you’ll explore classes in PHP, inheritance, constructors, and destructors, handling PHP exceptions with PHP throw and catch exceptions.

Learn PHP

A function needs function definition to perform a specific task.

A function needs function definition to perform a specific task.

A local variable declared in a function is usable outside that function.

A local variable declared in a function is usable outside that function.

What is the value displayed at the end of the following recursive function?
```
<?php 
function fun(int $n)
{
 if ($n == 4) return $n;
 else return 2*fun($n+1);
}
echo fun(2);

?> 
```

What is the value displayed at the end of the following recursive function?
<pre><code>&lt;?php 
function fun(int $n)
{
 if ($n == 4) return $n;
 else return 2*fun($n+1);
}
echo fun(2);

?&gt; 
</code></pre>

What will be displayed when the following PHP code is executed:
```
<?php
function myFunc($value)
{
 echo "its value is: $value";
}
echo "x is a variable, ";
myFunc(4);
?>

```

What will be displayed when the following PHP code is executed:
<pre><code>&lt;?php
function myFunc($value)
{
 echo &quot;its value is: $value&quot;;
}
echo &quot;x is a variable, &quot;;
myFunc(4);
?&gt;

</code></pre>

What is the correct way to create a function in PHP?



What is the correct way to create a function in PHP?

Now that you know all about functions in PHP, let's move on to Strings in the next chapter.

Solve a quick quiz to test your understanding of functions in PHP.

PHP Basics

PHP Variables

PHP Operators

PHP Conditional Statements

PHP Loops

PHP Functions

PHP Strings

PHP Arrays

PHP Assessment 1

PHP Classes

Exception Handling in PHP

PHP Assessment 2

Quick Quiz on Functions