If else — PHP Technical Interview Questions & Answers

If else

If else

  • If else 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 $row). Type it, run it, and say what you see. If you can do that from memory, you know If else.
  • From the example next to this theory: If else: scores array, print avg, then high marks.
  • Trap: foreach by reference then reuse the variable. Fix that before you talk about advanced PHP.
  • Viva: what is If else? Then show if / foreach ($arr as $row). Then name the trap.

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

Code Examples for If else

If else — working example

<?php
// If else
$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";
}

If else: scores array, print avg, then high marks. Say the output.

How to Explain If else to an Interviewer

What is If else?

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

Give one small example of If else.

if / foreach ($arr as $row) If else: scores array, print avg, then high marks

What mistake do beginners make with If else?

foreach by reference then reuse the variable Show the fix

Where do you use If else?

result.php pass if marks >= 40