PHP · Theory

Superglobals

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Theory

344/352

Superglobals

Superglobals sits in a first job task. Rohit’s job is Rohit walking through Superglobals. Write that first.

Keep Superglobals small. Rohit should finish Rohit walking through Superglobals in a few lines, not a 40-line dump.

Without Superglobals, a first job task gets messy and Rohit walking through Superglobals is hard to trust.

Superglobals shows up in a first job task. Name Rohit walking through Superglobals, not “a real-world scenario”.

If Rohit walking through Superglobals breaks under Superglobals, check copy-pasting Superglobals without a dry-run first.

After Superglobals, Rohit should still remember copy-pasting Superglobals without a dry-run.

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

Exam tip

Board: Rohit walking through Superglobals. Dry-run Superglobals. Name the trap: copy-pasting Superglobals without a dry-run.

Example

<?php
// Superglobals
$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";
}

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

Short notes

DefSuperglobals — Rohit uses it for Rohit walking through Superglobals in a first job task.
RuleSuperglobals → one Superglobals step Rohit can write from memory.
RememberSuperglobals + Apache/Nginx (a first job task).
UseSuperglobals in a first job task (Rohit walking through Superglobals).
TrapSuperglobals — copy-pasting Superglobals without a dry-run.
ExSuperglobals → Rohit walking through Superglobals.

PHP · Theory

Superglobals

← All stacks

Theory

344/352

Superglobals

Superglobals sits in a first job task. Rohit’s job is Rohit walking through Superglobals. Write that first.

Keep Superglobals small. Rohit should finish Rohit walking through Superglobals in a few lines, not a 40-line dump.

Without Superglobals, a first job task gets messy and Rohit walking through Superglobals is hard to trust.

Superglobals shows up in a first job task. Name Rohit walking through Superglobals, not “a real-world scenario”.

If Rohit walking through Superglobals breaks under Superglobals, check copy-pasting Superglobals without a dry-run first.

After Superglobals, Rohit should still remember copy-pasting Superglobals without a dry-run.

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

Exam tip

Board: Rohit walking through Superglobals. Dry-run Superglobals. Name the trap: copy-pasting Superglobals without a dry-run.

Example

<?php
// Superglobals
$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";
}

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

Short notes

DefSuperglobals — Rohit uses it for Rohit walking through Superglobals in a first job task.
RuleSuperglobals → one Superglobals step Rohit can write from memory.
RememberSuperglobals + Apache/Nginx (a first job task).
UseSuperglobals in a first job task (Rohit walking through Superglobals).
TrapSuperglobals — copy-pasting Superglobals without a dry-run.
ExSuperglobals → Rohit walking through Superglobals.

Superglobals

Example

Short notes

Questions

Superglobals

Example

Short notes

Questions