Parameterized — PHP Technical Interview Questions & Answers

Parameterized

Parameterized

  • Parameterized (function) is a PHP topic. In plain words you use it for function add($a, $b) in a marks helper. Don’t start with a slogan — start with that picture.
  • Smallest example: function name($x) { return $x; }. Type it, run it, and say what you see. If you can do that from memory, you know Parameterized (function).
  • From the example next to this theory: Parameterized: scores array, print avg, then high marks.
  • Trap: no return so the caller gets null. Fix that before you talk about advanced PHP.
  • Viva: what is Parameterized (function)? Then show function name($x) { return $x; }. Then name the trap.

Technical Interview Tip: What is Parameterized (function)? Show this: function name($x) { return $x; }. Trap: no return so the caller gets null.

Code Examples for Parameterized

Parameterized — working example

<?php
// Parameterized
$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";
}

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

How to Explain Parameterized to an Interviewer

What is Parameterized (function)?

Used for function add($a, $b) a marks helper Not just the heading

Give one small example of Parameterized (function).

function name($x) { return $x; } Parameterized: scores array, print avg, then high marks

What mistake do beginners make with Parameterized (function)?

no return so the caller gets null Show the fix

Where do you use Parameterized (function)?

a marks helper function add($a, $b)