strtolower() — PHP Technical Interview Questions & Answers

strtolower()

strtolower()

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

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

Code Examples for strtolower()

strtolower() — working example

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

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

How to Explain strtolower() to an Interviewer

What is strtolower()?

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

Give one small example of strtolower().

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

What mistake do beginners make with strtolower()?

only saying “strtolower” with no example Show the fix

Where do you use strtolower()?

a college portal page a short strtolower example