PHP · Theory

Type Hinting

Theory

67/352

Type Hinting

If you can teach Type Hinting using Priya walking through Type Hinting, you know it. If you only know the heading, you don’t.

Type Hinting on the board: one Type Hinting step Priya can write from memory. Then say what Priya walking through Type Hinting looks like after.

Without Type Hinting, a small live site gets messy and Priya walking through Type Hinting is hard to trust.

Type Hinting shows up in a small live site. Name Priya walking through Type Hinting, not “a real-world scenario”.

Type Hinting miss — only reciting the name of Type Hinting. Fix it before you talk about advanced PHP.

Type Hinting is not a lonely heading. Priya ties it to Priya walking through Type Hinting.

Viva for Type Hinting: what it is → one Type Hinting step Priya can write from memory → the mistake (only reciting the name of Type Hinting).

Exam tip

For Type Hinting: definition + a small live site + one failure.

Example

<?php
// Type Hinting
$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";
}

Type Hinting: scores array, print avg, then high marks. Say the output.

Short notes

DefType Hinting — Priya uses it for Priya walking through Type Hinting in a small live site.
RuleType Hinting → one Type Hinting step Priya can write from memory.
RememberType Hinting + a .php page (a small live site).
UseType Hinting in a small live site (Priya walking through Type Hinting).
TrapType Hinting — only reciting the name of Type Hinting.
ExType Hinting → Priya walking through Type Hinting.

PHP · Theory

Type Hinting

← All stacks

Theory

67/352

Type Hinting

If you can teach Type Hinting using Priya walking through Type Hinting, you know it. If you only know the heading, you don’t.

Type Hinting on the board: one Type Hinting step Priya can write from memory. Then say what Priya walking through Type Hinting looks like after.

Without Type Hinting, a small live site gets messy and Priya walking through Type Hinting is hard to trust.

Type Hinting shows up in a small live site. Name Priya walking through Type Hinting, not “a real-world scenario”.

Type Hinting miss — only reciting the name of Type Hinting. Fix it before you talk about advanced PHP.

Type Hinting is not a lonely heading. Priya ties it to Priya walking through Type Hinting.

Viva for Type Hinting: what it is → one Type Hinting step Priya can write from memory → the mistake (only reciting the name of Type Hinting).

Exam tip

For Type Hinting: definition + a small live site + one failure.

Example

<?php
// Type Hinting
$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";
}

Type Hinting: scores array, print avg, then high marks. Say the output.

Short notes

DefType Hinting — Priya uses it for Priya walking through Type Hinting in a small live site.
RuleType Hinting → one Type Hinting step Priya can write from memory.
RememberType Hinting + a .php page (a small live site).
UseType Hinting in a small live site (Priya walking through Type Hinting).
TrapType Hinting — only reciting the name of Type Hinting.
ExType Hinting → Priya walking through Type Hinting.

Type Hinting

Example

Short notes

Questions

Type Hinting

Example

Short notes

Questions