Do While Loop — PHP Technical Interview Questions & Answers

Do While Loop

Do While Loop

  • Do While Loop is a PHP topic. In plain words you use it for pass if marks >= 40 in result.php. Don’t start with a slogan — start with that picture.
  • Smallest example: if / foreach ($arr as $row). Type it, run it, and say what you see. If you can do that from memory, you know Do While Loop.
  • From the example next to this theory: Do While Loop: scores array, print avg, then high marks.
  • Trap: foreach by reference then reuse the variable. Fix that before you talk about advanced PHP.
  • Viva: what is Do While Loop? Then show if / foreach ($arr as $row). Then name the trap.

Technical Interview Tip: What is Do While Loop? Show this: if / foreach ($arr as $row). Trap: foreach by reference then reuse the variable.

Code Examples for Do While Loop

Do While Loop — working example

<?php
// Do While Loop
$scores = [80, 90, 70];
$avg = array_sum($scores) / count($scores);
echo "avg=" . number_format($avg, 1) . "\n";
foreach ($scores as $s) {
  if ($s >= 80) echo "high: $s\n";
}

Do While Loop: scores array, print avg, then high marks. Say the output.

How to Explain Do While Loop to an Interviewer

What is Do While Loop?

Used for pass if marks >= 40 result.php Not just the heading

Give one small example of Do While Loop.

if / foreach ($arr as $row) Do While Loop: scores array, print avg, then high marks

What mistake do beginners make with Do While Loop?

foreach by reference then reuse the variable Show the fix

Where do you use Do While Loop?

result.php pass if marks >= 40