Nested loop execution in PHP - Mini Project: Build & Apply

Nested loop execution

📖 Scenario: You are organizing a small event and want to print a seating chart. There are 3 rows and each row has 4 seats. You want to list each seat by its row and seat number.

🎯 Goal: Create a PHP program that uses nested loops to print each seat as "Row X Seat Y" for all rows and seats.

📋 What You'll Learn

Create a variable $rows with the value 3

Create a variable $seats_per_row with the value 4

Use a nested for loop where the outer loop uses $row from 1 to $rows

The inner loop uses $seat from 1 to $seats_per_row

Print each seat as Row X Seat Y where X is the row number and Y is the seat number

💡 Why This Matters

🌍 Real World

Nested loops are useful when you need to work with tables, grids, or any data with rows and columns, like seating charts or calendars.

💼 Career

Understanding nested loops is important for programming tasks involving multi-dimensional data, such as processing images, spreadsheets, or game boards.

1

Create variables for rows and seats

Create a variable called $rows and set it to 3. Create another variable called $seats_per_row and set it to 4.

PHP

<?php

// Create variables $rows and $seats_per_row
// Your code here

Need a hint?

Use $rows = 3; and $seats_per_row = 4; to create the variables.

2

Set up the outer loop for rows

Add a for loop that uses the variable $row starting from 1 up to and including $rows.

PHP

<?php
$rows = 3;
$seats_per_row = 4;

// Add a for loop for $row from 1 to $rows
// Your code here

Need a hint?

Use for ($row = 1; $row <= $rows; $row++) to loop through rows.

3

Add the inner loop for seats

Inside the for loop for $row, add another for loop that uses the variable $seat starting from 1 up to and including $seats_per_row.

PHP

<?php
$rows = 3;
$seats_per_row = 4;

for ($row = 1; $row <= $rows; $row++) {
    // Add inner for loop for $seat from 1 to $seats_per_row
    // Your code here
}

Need a hint?

Use for ($seat = 1; $seat <= $seats_per_row; $seat++) inside the outer loop.

4

Print each seat label

Inside the inner for loop, print the text Row X Seat Y where X is the value of $row and Y is the value of $seat. Use echo and add a newline after each print.

PHP

<?php
$rows = 3;
$seats_per_row = 4;

for ($row = 1; $row <= $rows; $row++) {
    for ($seat = 1; $seat <= $seats_per_row; $seat++) {
        // Print "Row X Seat Y" with newline
        // Your code here
    }
}

Need a hint?

Use echo "Row $row Seat $seat\n"; to print each seat with a newline.