PHP · Theory

For Loop

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For Loop

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

Do For Loop once by hand. one For Loop step Asha can write from memory. Change one input. Say the new result out loud.

For Loop exists so Asha can keep Asha walking through For Loop correct in a first job task.

For Loop shows up in a first job task. Name Asha walking through For Loop, not “a real-world scenario”.

Don’t do this with For Loop — copy-pasting For Loop without a dry-run. Interviewers spot it in ten seconds.

For Loop is not a lonely heading. Asha ties it to Asha walking through For Loop.

One breath for For Loop, then Asha walking through For Loop, then copy-pasting For Loop without a dry-run. Sit down.

Exam tip

Board: Asha walking through For Loop. Dry-run For Loop. Name the trap: copy-pasting For Loop without a dry-run.

Example

<?php
// For 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";
}

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

Short notes

DefFor Loop — Asha uses it for Asha walking through For Loop in a first job task.
RuleFor Loop → one For Loop step Asha can write from memory.
RememberFor Loop + Apache/Nginx (a first job task).
UseFor Loop in a first job task (Asha walking through For Loop).
TrapFor Loop — copy-pasting For Loop without a dry-run.
ExFor Loop → Asha walking through For Loop.

PHP · Theory

For Loop

← All stacks

Theory

19/352

For Loop

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

Do For Loop once by hand. one For Loop step Asha can write from memory. Change one input. Say the new result out loud.

For Loop exists so Asha can keep Asha walking through For Loop correct in a first job task.

For Loop shows up in a first job task. Name Asha walking through For Loop, not “a real-world scenario”.

Don’t do this with For Loop — copy-pasting For Loop without a dry-run. Interviewers spot it in ten seconds.

For Loop is not a lonely heading. Asha ties it to Asha walking through For Loop.

One breath for For Loop, then Asha walking through For Loop, then copy-pasting For Loop without a dry-run. Sit down.

Exam tip

Board: Asha walking through For Loop. Dry-run For Loop. Name the trap: copy-pasting For Loop without a dry-run.

Example

<?php
// For 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";
}

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

Short notes

DefFor Loop — Asha uses it for Asha walking through For Loop in a first job task.
RuleFor Loop → one For Loop step Asha can write from memory.
RememberFor Loop + Apache/Nginx (a first job task).
UseFor Loop in a first job task (Asha walking through For Loop).
TrapFor Loop — copy-pasting For Loop without a dry-run.
ExFor Loop → Asha walking through For Loop.

For Loop

Example

Short notes

Questions

For Loop

Example

Short notes

Questions