Comparison operators (loose and strict) in PHP - Mini Project: Build & Apply

Comparison operators (loose and strict)

📖 Scenario: You are working on a simple PHP script that compares values to check if they are equal or identical. This is useful when you want to understand how PHP treats different types of comparisons.

🎯 Goal: Build a PHP script that demonstrates the difference between loose equality (==) and strict equality (===) operators by comparing different values.

📋 What You'll Learn

Create variables with specific values

Create a variable to hold a comparison result

Use both loose and strict comparison operators

Print the comparison results

💡 Why This Matters

🌍 Real World

Understanding how PHP compares values helps avoid bugs when checking user input, form data, or database values.

💼 Career

Many PHP jobs require careful handling of data types and comparisons to ensure correct program logic and security.

1

Create variables with specific values

Create two variables called $a and $b. Set $a to the integer 5 and $b to the string '5'.

PHP

<?php

// Create variables $a and $b with values 5 and '5'
// Your code here

Need a hint?

Use $a = 5; and $b = '5'; to create the variables.

2

Create a variable to hold a comparison result

Create a variable called $looseEqual and set it to the result of comparing $a and $b using the loose equality operator ==.

PHP

<?php
$a = 5;
$b = '5';

// Create $looseEqual to store result of $a == $b
// Your code here

Need a hint?

Use $looseEqual = ($a == $b); to compare loosely.

3

Use strict equality operator for comparison

Create a variable called $strictEqual and set it to the result of comparing $a and $b using the strict equality operator ===.

PHP

<?php
$a = 5;
$b = '5';
$looseEqual = ($a == $b);

// Create $strictEqual to store result of $a === $b
// Your code here

Need a hint?

Use $strictEqual = ($a === $b); to compare strictly.

4

Print the comparison results

Print the values of $looseEqual and $strictEqual using var_dump() to show the comparison results.

PHP

<?php
$a = 5;
$b = '5';
$looseEqual = ($a == $b);
$strictEqual = ($a === $b);

// Print $looseEqual and $strictEqual using var_dump()
// Your code here

Need a hint?

Use var_dump($looseEqual); and var_dump($strictEqual); to print the results.