OneBite.Dev - Coding blog in a bite size

Implement A Two Nested Loop In PHP

Code snippet for how to Implement A Two Nested Loop In PHP with sample and detail explanation

In this article, we will discuss one of the fundamental concepts in PHP programming: implementing a two nested loop. By understanding nested loops, you’ll be able to handle more complex tasks in your PHP programs.

Code snippet: Two Nested Loop in PHP

for ($i = 0; $i < 5; $i++) {  
    for ($j = 0; $j <= $i; $j++) {  
    echo "* ";  
    }  
    echo "<br/>";  
}

Code Explanation for Two Nested Loop in PHP

This code snippet is a simple example of a two nested loop in PHP, more specifically, it creates a simple pyramid pattern of asterisks.

Let’s break down how it works:

  1. It starts with an outer loop: for ($i = 0; $i < 5; $i++). This loop will run 5 times because we have specified the limit where variable $i should be less than 5.

  2. Inside this outer loop, there’s an inner loop: for ($j = 0; $j <= $i; $j++). This inner loop depends on the value of $i from the outer loop and it will repeat itself as many times as the current value of $i.

  3. Each time the inner loop runs, it echoes an asterisk followed by a space: echo "* ".

  4. After each completion of the inner loop, our code echoes a <br/>, which is an HTML tag that creates a break line. This means that each time the inner loop finishes, a new line is started.

  5. As $i increases with each iteration of the outer loop, the inner loop runs more times on each successive run through the outer loop. This creates the pyramid effect.

And that is how you implement a simple two nested loop in PHP. By understanding this basic structure, you’ll have a solid foundation to work with more complex nested loops in the future.

php