substr_replace() — PHP Technical Interview Questions & Answers

substr_replace()

substr_replace()

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

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

Code Examples for substr_replace()

substr_replace() — working example

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

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

How to Explain substr_replace() to an Interviewer

What is substr_replace()?

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

Give one small example of substr_replace().

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

What mistake do beginners make with substr_replace()?

only saying “substr_replace” with no example Show the fix

Where do you use substr_replace()?

a college portal page a short substr_replace example