Join() — PHP Technical Interview Questions & Answers

Join()

Join()

  • Join() is a PHP topic. In plain words you use it for a short Join example in a college portal page. Don’t start with a slogan — start with that picture.
  • Smallest example: the smallest Join example you can type. Type it, run it, and say what you see. If you can do that from memory, you know Join().
  • From the example next to this theory: Join(): scores array, print avg, then high marks.
  • Trap: only saying “Join” with no example. Fix that before you talk about advanced PHP.
  • Viva: what is Join()? Then show the smallest Join example you can type. Then name the trap.

Technical Interview Tip: What is Join()? Show this: the smallest Join example you can type. Trap: only saying “Join” with no example.

Code Examples for Join()

Join() — working example

<?php
// Join()
$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";
}

Join(): scores array, print avg, then high marks. Say the output.

How to Explain Join() to an Interviewer

What is Join()?

Used for a short Join example a college portal page Not just the heading

Give one small example of Join().

the smallest Join example you can type Join(): scores array, print avg, then high marks

What mistake do beginners make with Join()?

only saying “Join” with no example Show the fix

Where do you use Join()?

a college portal page a short Join example