PHP Switch and Loops Quiz

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Questions and Answers

In PHP, which of the following is true about the switch statement?

  • There can be more than one default statement in a switch case.
  • The default statement in a switch case is optional. (correct)
  • Switch case must always end with the default statement.
  • The default statement is mandatory in every switch case.

What happens if more than one default statement is included in a PHP switch case?

  • It will ignore all default statements except the last one.
  • It will trigger a Fatal error. (correct)
  • It will prioritize the default statements based on their position in the code.
  • It will automatically select the first default statement.

What is the purpose of the 'break' statement in a PHP switch case?

  • To end the current loop and resume execution at the next iteration.
  • To exit the switch case once a matching condition is found. (correct)
  • To jump to a different part of the code based on a condition.
  • To unbind a variable from its current value.

Which of the following best describes the purpose of a 'case' statement in PHP?

<p>To check if a condition is true and execute a block of code. (C)</p> Signup and view all the answers

When using a 'for' loop in PHP, what happens if the 'break' statement is encountered inside the loop?

<p>It will terminate the loop immediately and resume execution after the loop. (A)</p> Signup and view all the answers

In PHP, which loop type is guaranteed to execute the block of code at least once?

<p>do...while loop (B)</p> Signup and view all the answers

What makes nesting of switch statements in PHP a practice that should be approached with caution?

<p>It results in a more complex and less readable program. (C)</p> Signup and view all the answers

When using a for loop in PHP, what does the loop counter value represent?

<p>The value that the loop counter is initialized to (D)</p> Signup and view all the answers

What is the main advantage of PHP functions as mentioned in the text?

<p>Condensing logic to make code shorter and more efficient. (D)</p> Signup and view all the answers

Which type of PHP function argument is used by default when passing information to a function?

<p>Call by Value (D)</p> Signup and view all the answers

What is the primary purpose of the foreach loop in PHP?

<p>To loop through a block of code for each element in an array or each property in an object. (C)</p> Signup and view all the answers

What is the primary purpose of a 'do...while' loop in PHP?

<p>To execute a block of code at least once, and then continue to execute it as long as the specified condition is true (D)</p> Signup and view all the answers

When using a 'while' loop in PHP, what happens if the condition is initially false?

<p>The loop is never executed (D)</p> Signup and view all the answers

What is the key difference between a 'for' loop and a 'foreach' loop in PHP?

<p>'for' loops require specifying the number of iterations, while 'foreach' automatically iterates over all elements of an array. (A)</p> Signup and view all the answers

When should you use a 'switch' statement over nested 'if...else' statements in PHP?

<p>When you need to evaluate multiple conditions and execute different blocks of code based on each condition (C)</p> Signup and view all the answers

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