PHP · Theory

bin2hex()

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Theory

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bin2hex()

If you can teach bin2hex() using a bin2hex dry-run, you know it. If you only know the heading, you don’t.

For bin2hex(), a .php page is in play. Don’t blame it until you have traced a bin2hex dry-run.

bin2hex() exists so Zara can keep a bin2hex dry-run correct in a viva board.

Zara ships bin2hex() in a viva board. That is the use case worth saying.

bin2hex() miss — only reciting the name of bin2hex. Fix it before you talk about advanced PHP.

After bin2hex(), Zara should still remember only reciting the name of bin2hex.

Viva for bin2hex(): what it is → one bin2hex step Zara can write from memory → the mistake (only reciting the name of bin2hex).

Exam tip

Board: a bin2hex dry-run. Dry-run bin2hex(). Name the trap: only reciting the name of bin2hex.

Example

<?php
// bin2hex()
$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";
}

bin2hex(): scores array, print avg, then high marks. Say the output.

Short notes

Defbin2hex() — Zara uses it for a bin2hex dry-run in a viva board.
Rulebin2hex() → one bin2hex step Zara can write from memory.
Rememberbin2hex() + a .php page (a viva board).
Usebin2hex() in a viva board (a bin2hex dry-run).
Trapbin2hex() — only reciting the name of bin2hex.
Exbin2hex() → a bin2hex dry-run.

PHP · Theory

bin2hex()

← All stacks

Theory

182/352

bin2hex()

If you can teach bin2hex() using a bin2hex dry-run, you know it. If you only know the heading, you don’t.

For bin2hex(), a .php page is in play. Don’t blame it until you have traced a bin2hex dry-run.

bin2hex() exists so Zara can keep a bin2hex dry-run correct in a viva board.

Zara ships bin2hex() in a viva board. That is the use case worth saying.

bin2hex() miss — only reciting the name of bin2hex. Fix it before you talk about advanced PHP.

After bin2hex(), Zara should still remember only reciting the name of bin2hex.

Viva for bin2hex(): what it is → one bin2hex step Zara can write from memory → the mistake (only reciting the name of bin2hex).

Exam tip

Board: a bin2hex dry-run. Dry-run bin2hex(). Name the trap: only reciting the name of bin2hex.

Example

<?php
// bin2hex()
$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";
}

bin2hex(): scores array, print avg, then high marks. Say the output.

Short notes

Defbin2hex() — Zara uses it for a bin2hex dry-run in a viva board.
Rulebin2hex() → one bin2hex step Zara can write from memory.
Rememberbin2hex() + a .php page (a viva board).
Usebin2hex() in a viva board (a bin2hex dry-run).
Trapbin2hex() — only reciting the name of bin2hex.
Exbin2hex() → a bin2hex dry-run.

bin2hex()

Example

Short notes

Questions

bin2hex()

Example

Short notes

Questions