PHP · Theory

strrev()

Theory

257/352

strrev()

strrev() is a PHP topic. In plain words you use it for a short strrev example in a college portal page. Don’t start with a slogan — start with that picture.

Smallest example: the smallest strrev example you can type. Type it, run it, and say what you see. If you can do that from memory, you know strrev().

From the example next to this theory — strrev(): scores array, print avg, then high marks.

Trap — only saying “strrev” with no example. Fix that before you talk about advanced PHP.

Viva — what is strrev()? Then show the smallest strrev example you can type. Then name the trap.

Exam tip

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

Example

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

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

Short notes

Defstrrev() — a short strrev example in a college portal page.
Rulethe smallest strrev example you can type
Traponly saying “strrev” with no example
Usea college portal page

PHP · Theory

strrev()

← All stacks

Theory

257/352

strrev()

strrev() is a PHP topic. In plain words you use it for a short strrev example in a college portal page. Don’t start with a slogan — start with that picture.

Smallest example: the smallest strrev example you can type. Type it, run it, and say what you see. If you can do that from memory, you know strrev().

From the example next to this theory — strrev(): scores array, print avg, then high marks.

Trap — only saying “strrev” with no example. Fix that before you talk about advanced PHP.

Viva — what is strrev()? Then show the smallest strrev example you can type. Then name the trap.

Exam tip

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

Example

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

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

Short notes

Defstrrev() — a short strrev example in a college portal page.
Rulethe smallest strrev example you can type
Traponly saying “strrev” with no example
Usea college portal page

strrev()

Example

Short notes

Questions

strrev()

Example

Short notes

Questions