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If Statement | Conditional Statements
Introduction to PHP
course content

Course Content

Introduction to PHP

Introduction to PHP

1. First Acquaintance
2. Variables and Data Types
3. Conditional Statements
4. Arrays
5. Loops

bookIf Statement

An if statement is a construct that allows you to execute a code block if a specific condition is met.

The condition is an expression that evaluates to a bool value, which can be true or false. If the condition is true, the block of code is executed. If the condition is false, the block of code is skipped.

Syntax


The syntax of the conditional operator is so simple: if keyword, condition in the parentheses ( ) and a code block in the curly brackets { }.

The open curly bracket { } opens the code block, and the close curly bracket symbol closes it. Let's consider a example:

php

main

copy
123456
<?php $num=5; if ($num>0) { // 5 > 0 ? echo "Number is positive"; // output if it's `true` } ?>

The condition was confirmed and the block of code worked. Let's consider a different example:

php

main

copy
123456
<?php $num = 10; if ($num < 0) { // 10 < 0 ? echo "Number is negative"; // output if it's `true` } ?>

The condition was not confirmed, and the code block did not work.

Task

Complete the code to create a program that checks the price of a chocolate bar and prints the appropriate message. If the price of the chocolate bar is less than or equal to 3, the program should print "This chocolate bar has an average price". If the price of the chocolate bar is greater than 3, the program should print "This chocolate bar is expensive".

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Section 3. Chapter 1
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bookIf Statement

An if statement is a construct that allows you to execute a code block if a specific condition is met.

The condition is an expression that evaluates to a bool value, which can be true or false. If the condition is true, the block of code is executed. If the condition is false, the block of code is skipped.

Syntax


The syntax of the conditional operator is so simple: if keyword, condition in the parentheses ( ) and a code block in the curly brackets { }.

The open curly bracket { } opens the code block, and the close curly bracket symbol closes it. Let's consider a example:

php

main

copy
123456
<?php $num=5; if ($num>0) { // 5 > 0 ? echo "Number is positive"; // output if it's `true` } ?>

The condition was confirmed and the block of code worked. Let's consider a different example:

php

main

copy
123456
<?php $num = 10; if ($num < 0) { // 10 < 0 ? echo "Number is negative"; // output if it's `true` } ?>

The condition was not confirmed, and the code block did not work.

Task

Complete the code to create a program that checks the price of a chocolate bar and prints the appropriate message. If the price of the chocolate bar is less than or equal to 3, the program should print "This chocolate bar has an average price". If the price of the chocolate bar is greater than 3, the program should print "This chocolate bar is expensive".

Switch to desktopSwitch to desktop for real-world practiceContinue from where you are using one of the options below
Everything was clear?

How can we improve it?

Thanks for your feedback!

Section 3. Chapter 1
toggle bottom row

bookIf Statement

An if statement is a construct that allows you to execute a code block if a specific condition is met.

The condition is an expression that evaluates to a bool value, which can be true or false. If the condition is true, the block of code is executed. If the condition is false, the block of code is skipped.

Syntax


The syntax of the conditional operator is so simple: if keyword, condition in the parentheses ( ) and a code block in the curly brackets { }.

The open curly bracket { } opens the code block, and the close curly bracket symbol closes it. Let's consider a example:

php

main

copy
123456
<?php $num=5; if ($num>0) { // 5 > 0 ? echo "Number is positive"; // output if it's `true` } ?>

The condition was confirmed and the block of code worked. Let's consider a different example:

php

main

copy
123456
<?php $num = 10; if ($num < 0) { // 10 < 0 ? echo "Number is negative"; // output if it's `true` } ?>

The condition was not confirmed, and the code block did not work.

Task

Complete the code to create a program that checks the price of a chocolate bar and prints the appropriate message. If the price of the chocolate bar is less than or equal to 3, the program should print "This chocolate bar has an average price". If the price of the chocolate bar is greater than 3, the program should print "This chocolate bar is expensive".

Switch to desktopSwitch to desktop for real-world practiceContinue from where you are using one of the options below
Everything was clear?

How can we improve it?

Thanks for your feedback!

An if statement is a construct that allows you to execute a code block if a specific condition is met.

The condition is an expression that evaluates to a bool value, which can be true or false. If the condition is true, the block of code is executed. If the condition is false, the block of code is skipped.

Syntax


The syntax of the conditional operator is so simple: if keyword, condition in the parentheses ( ) and a code block in the curly brackets { }.

The open curly bracket { } opens the code block, and the close curly bracket symbol closes it. Let's consider a example:

php

main

copy
123456
<?php $num=5; if ($num>0) { // 5 > 0 ? echo "Number is positive"; // output if it's `true` } ?>

The condition was confirmed and the block of code worked. Let's consider a different example:

php

main

copy
123456
<?php $num = 10; if ($num < 0) { // 10 < 0 ? echo "Number is negative"; // output if it's `true` } ?>

The condition was not confirmed, and the code block did not work.

Task

Complete the code to create a program that checks the price of a chocolate bar and prints the appropriate message. If the price of the chocolate bar is less than or equal to 3, the program should print "This chocolate bar has an average price". If the price of the chocolate bar is greater than 3, the program should print "This chocolate bar is expensive".

Switch to desktopSwitch to desktop for real-world practiceContinue from where you are using one of the options below
Section 3. Chapter 1
Switch to desktopSwitch to desktop for real-world practiceContinue from where you are using one of the options below
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