PHP · Theory

While Loop

Theory

21/352

While Loop

If you can teach While Loop using Ananya walking through While Loop, you know it. If you only know the heading, you don’t.

Keep While Loop small. Ananya should finish Ananya walking through While Loop in a few lines, not a 40-line dump.

While Loop exists so Ananya can keep Ananya walking through While Loop correct in lab hour.

Use While Loop when Ananya walking through While Loop must stay clear. If a simpler PHP step works, use that instead.

If Ananya walking through While Loop breaks under While Loop, check copy-pasting While Loop without a dry-run first.

After While Loop, Ananya should still remember copy-pasting While Loop without a dry-run.

Viva for While Loop: what it is → one While Loop step Ananya can write from memory → the mistake (copy-pasting While Loop without a dry-run).

Exam tip

For While Loop: definition + lab hour + one failure.

Example

<?php
// While Loop
$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";
}

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

Short notes

DefWhile Loop — Ananya uses it for Ananya walking through While Loop in lab hour.
RuleWhile Loop → one While Loop step Ananya can write from memory.
RememberWhile Loop + the PHP runtime (lab hour).
UseWhile Loop in lab hour (Ananya walking through While Loop).
TrapWhile Loop — copy-pasting While Loop without a dry-run.
ExWhile Loop → Ananya walking through While Loop.

PHP · Theory

While Loop

← All stacks

Theory

21/352

While Loop

If you can teach While Loop using Ananya walking through While Loop, you know it. If you only know the heading, you don’t.

Keep While Loop small. Ananya should finish Ananya walking through While Loop in a few lines, not a 40-line dump.

While Loop exists so Ananya can keep Ananya walking through While Loop correct in lab hour.

Use While Loop when Ananya walking through While Loop must stay clear. If a simpler PHP step works, use that instead.

If Ananya walking through While Loop breaks under While Loop, check copy-pasting While Loop without a dry-run first.

After While Loop, Ananya should still remember copy-pasting While Loop without a dry-run.

Viva for While Loop: what it is → one While Loop step Ananya can write from memory → the mistake (copy-pasting While Loop without a dry-run).

Exam tip

For While Loop: definition + lab hour + one failure.

Example

<?php
// While Loop
$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";
}

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

Short notes

DefWhile Loop — Ananya uses it for Ananya walking through While Loop in lab hour.
RuleWhile Loop → one While Loop step Ananya can write from memory.
RememberWhile Loop + the PHP runtime (lab hour).
UseWhile Loop in lab hour (Ananya walking through While Loop).
TrapWhile Loop — copy-pasting While Loop without a dry-run.
ExWhile Loop → Ananya walking through While Loop.

While Loop

Example

Short notes

Questions

While Loop

Example

Short notes

Questions