PHP · Theory

Magic Constants

Theory

13/352

Magic Constants

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

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

From the example next to this theory — Magic Constants: scores array, print avg, then high marks.

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

Viva — what is Magic Constants? Then show the smallest Magic Constants example you can type. Then name the trap.

Exam tip

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

Example

<?php
// Magic Constants
$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";
}

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

Short notes

DefMagic Constants — a short Magic Constants example in a college portal page.
Rulethe smallest Magic Constants example you can type
Traponly saying “Magic Constants” with no example
Usea college portal page

PHP · Theory

Magic Constants

← All stacks

Theory

13/352

Magic Constants

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

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

From the example next to this theory — Magic Constants: scores array, print avg, then high marks.

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

Viva — what is Magic Constants? Then show the smallest Magic Constants example you can type. Then name the trap.

Exam tip

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

Example

<?php
// Magic Constants
$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";
}

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

Short notes

DefMagic Constants — a short Magic Constants example in a college portal page.
Rulethe smallest Magic Constants example you can type
Traponly saying “Magic Constants” with no example
Usea college portal page

Magic Constants

Example

Short notes

Questions

Magic Constants

Example

Short notes

Questions