PHP · Theory

Switch

← All stacks

Theory

18/352

Switch

Don’t start Switch with jargon. Start with a Switch dry-run. That is the whole point.

For Switch, Apache/Nginx is in play. Don’t blame it until you have traced a Switch dry-run.

Skip Switch and only reciting the name of Switch shows up in a campus project.

Use Switch when a Switch dry-run must stay clear. If a simpler PHP step works, use that instead.

Switch trap — only reciting the name of Switch. Riya loses marks for that every viva.

After Switch, Riya should still remember only reciting the name of Switch.

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

Exam tip

Say Switch in one breath, then one Switch step Riya can write from memory, then only reciting the name of Switch.

Example

<?php
// Switch
$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";
}

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

Short notes

DefSwitch — Riya uses it for a Switch dry-run in a campus project.
RuleSwitch → one Switch step Riya can write from memory.
RememberSwitch + Apache/Nginx (a campus project).
UseSwitch in a campus project (a Switch dry-run).
TrapSwitch — only reciting the name of Switch.
ExSwitch → a Switch dry-run.

PHP · Theory

Switch

← All stacks

Theory

18/352

Switch

Don’t start Switch with jargon. Start with a Switch dry-run. That is the whole point.

For Switch, Apache/Nginx is in play. Don’t blame it until you have traced a Switch dry-run.

Skip Switch and only reciting the name of Switch shows up in a campus project.

Use Switch when a Switch dry-run must stay clear. If a simpler PHP step works, use that instead.

Switch trap — only reciting the name of Switch. Riya loses marks for that every viva.

After Switch, Riya should still remember only reciting the name of Switch.

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

Exam tip

Say Switch in one breath, then one Switch step Riya can write from memory, then only reciting the name of Switch.

Example

<?php
// Switch
$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";
}

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

Short notes

DefSwitch — Riya uses it for a Switch dry-run in a campus project.
RuleSwitch → one Switch step Riya can write from memory.
RememberSwitch + Apache/Nginx (a campus project).
UseSwitch in a campus project (a Switch dry-run).
TrapSwitch — only reciting the name of Switch.
ExSwitch → a Switch dry-run.

Switch

Example

Short notes

Questions

Switch

Example

Short notes

Questions