PHP · Theory

max()

Theory

309/352

max()

If you can teach max() using Sara walking through max, you know it. If you only know the heading, you don’t.

max() on the board — one max step Sara can write from memory. Then say what Sara walking through max looks like after.

Without max(), a small live site gets messy and Sara walking through max is hard to trust.

max() shows up in a small live site. Name Sara walking through max, not “a real-world scenario”.

max() trap — skipping the failure case for max. Sara loses marks for that every viva.

max() is not a lonely heading. Sara ties it to Sara walking through max.

Viva for max() — what it is → one max step Sara can write from memory → the mistake (skipping the failure case for max).

Exam tip

Say max() in one breath, then one max step Sara can write from memory, then skipping the failure case for max.

Example

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

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

Short notes

Defmax() — Sara uses it for Sara walking through max in a small live site.
Rulemax() → one max step Sara can write from memory.
Remembermax() + a .php page (a small live site).
Usemax() in a small live site (Sara walking through max).
Trapmax() — skipping the failure case for max.
Exmax() → Sara walking through max.

PHP · Theory

max()

← All stacks

Theory

309/352

max()

If you can teach max() using Sara walking through max, you know it. If you only know the heading, you don’t.

max() on the board — one max step Sara can write from memory. Then say what Sara walking through max looks like after.

Without max(), a small live site gets messy and Sara walking through max is hard to trust.

max() shows up in a small live site. Name Sara walking through max, not “a real-world scenario”.

max() trap — skipping the failure case for max. Sara loses marks for that every viva.

max() is not a lonely heading. Sara ties it to Sara walking through max.

Viva for max() — what it is → one max step Sara can write from memory → the mistake (skipping the failure case for max).

Exam tip

Say max() in one breath, then one max step Sara can write from memory, then skipping the failure case for max.

Example

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

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

Short notes

Defmax() — Sara uses it for Sara walking through max in a small live site.
Rulemax() → one max step Sara can write from memory.
Remembermax() + a .php page (a small live site).
Usemax() in a small live site (Sara walking through max).
Trapmax() — skipping the failure case for max.
Exmax() → Sara walking through max.

max()

Example

Short notes

Questions

max()

Example

Short notes

Questions