mktime() — PHP Technical Interview Questions & Answers

mktime()

mktime()

  • mktime() (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 $x; }. Type it, run it, and say what you see. If you can do that from memory, you know mktime() (function).
  • From the example next to this theory: mktime(): scores array, print avg, then high marks.
  • Trap: no return so the caller gets null. Fix that before you talk about advanced PHP.
  • Viva: what is mktime() (function)? Then show function name($x) { return $x; }. Then name the trap.

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

Code Examples for mktime()

mktime() — working example

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

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

How to Explain mktime() to an Interviewer

What is mktime() (function)?

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

Give one small example of mktime() (function).

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

What mistake do beginners make with mktime() (function)?

no return so the caller gets null Show the fix

Where do you use mktime() (function)?

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