File Upload — PHP Technical Interview Questions & Answers

File Upload

File Upload

  • File Upload is a PHP topic. In plain words you use it for photo.jpg upload in profile page. Don’t start with a slogan — start with that picture.
  • Smallest example: move_uploaded_file after validation. Type it, run it, and say what you see. If you can do that from memory, you know File Upload.
  • From the example next to this theory: File Upload: scores array, print avg, then high marks.
  • Trap: no size / type check. Fix that before you talk about advanced PHP.
  • Viva: what is File Upload? Then show move_uploaded_file after validation. Then name the trap.

Technical Interview Tip: What is File Upload? Show this: move_uploaded_file after validation. Trap: no size / type check.

Code Examples for File Upload

File Upload — working example

<?php
// File Upload
$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";
}

File Upload: scores array, print avg, then high marks. Say the output.

How to Explain File Upload to an Interviewer

What is File Upload?

Used for photo.jpg upload profile page Not just the heading

Give one small example of File Upload.

move_uploaded_file after validation File Upload: scores array, print avg, then high marks

What mistake do beginners make with File Upload?

no size / type check Show the fix

Where do you use File Upload?

profile page photo.jpg upload