If statement execution flow in PHP - Mini Project: Build & Apply

If Statement Execution Flow in PHP

📖 Scenario: You are creating a simple program to check the weather temperature and give advice on what to wear.

🎯 Goal: Build a PHP script that uses if statements to decide what message to show based on the temperature.

📋 What You'll Learn

Create a variable called $temperature with the exact value 15.

Create a variable called $cold_threshold with the exact value 10.

Use an if statement to check if $temperature is less than $cold_threshold.

If true, set a variable $message to 'It is cold, wear a jacket.'.

Otherwise, set $message to 'The weather is nice, no jacket needed.'.

Print the $message variable.

💡 Why This Matters

🌍 Real World

Checking conditions like weather temperature helps apps give useful advice, like what clothes to wear.

💼 Career

Understanding if statements is essential for any programming job because it helps programs make decisions.

1

Set the temperature variable

Create a variable called $temperature and set it to the number 15.

PHP

<?php

// Create a variable called $temperature and set it to 15
// Your code here

Need a hint?

Use the $ sign to create variables in PHP.

2

Set the cold threshold variable

Create a variable called $cold_threshold and set it to the number 10.

PHP

<?php

$temperature = 15;

// Create a variable called $cold_threshold and set it to 10
// Your code here

Need a hint?

Remember to use $ before variable names in PHP.

3

Write the if statement to check temperature

Write an if statement that checks if $temperature is less than $cold_threshold. If true, set $message to 'It is cold, wear a jacket.'. Otherwise, set $message to 'The weather is nice, no jacket needed.'.

PHP

<?php

$temperature = 15;
$cold_threshold = 10;

// Write an if statement to set $message based on temperature
// Your code here

Need a hint?

Use if (condition) { ... } else { ... } structure in PHP.

4

Print the message

Write a print statement to display the $message variable.

PHP

<?php

$temperature = 15;
$cold_threshold = 10;

if ($temperature < $cold_threshold) {
    $message = 'It is cold, wear a jacket.';
} else {
    $message = 'The weather is nice, no jacket needed.';
}

// Print the $message variable
// Your code here

Need a hint?

Use print($message); to show the message on the screen.