PHP · Theory

Call By Value

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Theory

28/352

Call By Value

Don’t start Call By Value with jargon. Start with Vikram walking through Call By Value. That is the whole point.

For Call By Value, Apache/Nginx is in play. Don’t blame it until you have traced Vikram walking through Call By Value.

Skip Call By Value and copy-pasting Call By Value without a dry-run shows up in a first job task.

Call By Value shows up in a first job task. Name Vikram walking through Call By Value, not “a real-world scenario”.

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

Call By Value is not a lonely heading. Vikram ties it to Vikram walking through Call By Value.

Close Call By Value with: “If I skip it, Vikram walking through Call By Value goes wrong like this: copy-pasting Call By Value without a dry-run.”

Exam tip

Say Call By Value in one breath, then one Call By Value step Vikram can write from memory, then copy-pasting Call By Value without a dry-run.

Example

<?php
// Call By Value
$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";
}

Call By Value: scores array, print avg, then high marks. Say the output.

Short notes

DefCall By Value — Vikram uses it for Vikram walking through Call By Value in a first job task.
RuleCall By Value → one Call By Value step Vikram can write from memory.
RememberCall By Value + Apache/Nginx (a first job task).
UseCall By Value in a first job task (Vikram walking through Call By Value).
TrapCall By Value — copy-pasting Call By Value without a dry-run.
ExCall By Value → Vikram walking through Call By Value.

PHP · Theory

Call By Value

← All stacks

Theory

28/352

Call By Value

Don’t start Call By Value with jargon. Start with Vikram walking through Call By Value. That is the whole point.

For Call By Value, Apache/Nginx is in play. Don’t blame it until you have traced Vikram walking through Call By Value.

Skip Call By Value and copy-pasting Call By Value without a dry-run shows up in a first job task.

Call By Value shows up in a first job task. Name Vikram walking through Call By Value, not “a real-world scenario”.

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

Call By Value is not a lonely heading. Vikram ties it to Vikram walking through Call By Value.

Close Call By Value with: “If I skip it, Vikram walking through Call By Value goes wrong like this: copy-pasting Call By Value without a dry-run.”

Exam tip

Say Call By Value in one breath, then one Call By Value step Vikram can write from memory, then copy-pasting Call By Value without a dry-run.

Example

<?php
// Call By Value
$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";
}

Call By Value: scores array, print avg, then high marks. Say the output.

Short notes

DefCall By Value — Vikram uses it for Vikram walking through Call By Value in a first job task.
RuleCall By Value → one Call By Value step Vikram can write from memory.
RememberCall By Value + Apache/Nginx (a first job task).
UseCall By Value in a first job task (Vikram walking through Call By Value).
TrapCall By Value — copy-pasting Call By Value without a dry-run.
ExCall By Value → Vikram walking through Call By Value.

Call By Value

Example

Short notes

Questions

Call By Value

Example

Short notes

Questions