PHP Conditional Statements Quiz

17 Questions

When is the for statement used?

When you know exactly how many times you want to execute a statement

What happens if the parameter in the for statement is left empty?

The loop will run indefinitely

In the for statement, what happens if multiple expressions are separated by commas?

All expressions are evaluated, and the result is taken from the last expression

What does the foreach statement do in a loop?

It assigns the value of the current array element to $value

How does the foreach statement handle iterating over an array?

It assigns each array element to $value sequentially

What is the purpose of the switch statement in PHP?

To avoid long blocks of if..elseif..else code

Which looping statement in PHP executes a block of code at least once?

do...while

In PHP, which loop statement loops through a block of code for each element in an array?

foreach

What happens in a 'while' loop if the condition is never met?

It never runs the loop

Which loop statement is used when you want a block of code to run a specific number of times?

for

What does the 'foreach' loop iterate over in PHP?

Elements of an array

When should you use the if...else statement in PHP?

When you want to execute a set of code when a condition is true and another when the condition is not true

What is the purpose of the elseif statement in PHP?

To execute some code if one of several conditions are true

In PHP, what should be done if more than one line of code needs to be executed based on a condition?

Enclose the lines within curly braces

What does the switch statement allow you to do in PHP?

Select one of many blocks of code to be executed

What happens if a condition is not met in an if...else statement in PHP?

The code associated with the else part is executed

Which statement in PHP allows you to execute different blocks of code based on different conditions?

switch statement

Study Notes

Conditional Statements

Conditional statements are used to perform different actions based on different decisions.
The if...else statement is used to execute a set of code when a condition is true and another set of code when the condition is false.
The elseif statement is used with the if...else statement to execute a set of code if one of several conditions is true.

The if...else Statement

The if...else statement is used to execute some code if a condition is true and another code if a condition is false.
If more than one line should be executed if a condition is true/false, the lines should be enclosed within curly braces.

The elseif Statement

The elseif statement is used to execute some code if one of several conditions are true.

The Switch Statement

The switch statement is used to select one of many blocks of code to be executed.
The switch statement is used to avoid long blocks of if..elseif..else code.

Looping

Looping statements are used to perform the same block of code to run a number of times.
PHP has four types of looping statements: while, do...while, for, and foreach.

The while Statement

The while statement will execute a block of code if and as long as a condition is true.
The while statement will continue to run as long as the specified condition is true.

The do...while Statement

The do...while statement will execute a block of code at least once, and then repeat the loop as long as a condition is true.
The do...while statement will continue to increment the variable as long as it has a value of less than or equal to a specified value.

The for Statement

The for statement is the most advanced of the loops in PHP.
The for statement is used when you know how many times you want to execute a statement or a list of statements.
The for statement has three parameters: initialization, condition, and increment.

The foreach Statement

The foreach statement is used to loop through an array.
For every loop, the value of the current array element is assigned to $value (and the array pointer is moved by one).

Test your knowledge on using if...else and elseif statements in PHP to control the flow of your code based on different conditions.

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