PHP · Theory

number_format()

Theory

214/352

number_format()

number_format() is simple if you keep it on paper. Meera uses it for number_format on Meera's board in lab hour.

number_format() on the board: one number_format step Meera can write from memory. Then say what number_format on Meera's board looks like after.

number_format() exists so Meera can keep number_format on Meera's board correct in lab hour.

Use number_format() when number_format on Meera's board must stay clear. If a simpler PHP step works, use that instead.

number_format() miss — skipping the failure case for number_format. Fix it before you talk about advanced PHP.

Place number_format() next to nearby PHP work — one number_format step Meera can write from memory is the link.

Viva for number_format(): what it is → one number_format step Meera can write from memory → the mistake (skipping the failure case for number_format).

Diagram

  Browser
      │ POST / GET
      ▼
   .php file
      │
      ▼
   HTML back

Exam tip

Say number_format() in one breath, then one number_format step Meera can write from memory, then skipping the failure case for number_format.

Example

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

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

Short notes

Defnumber_format() — Meera uses it for number_format on Meera's board in lab hour.
Rulenumber_format() → one number_format step Meera can write from memory.
Remembernumber_format() + Apache/Nginx (lab hour).
Usenumber_format() in lab hour (number_format on Meera's board).
Trapnumber_format() — skipping the failure case for number_format.
Exnumber_format() → number_format on Meera's board.

PHP · Theory

number_format()

← All stacks

Theory

214/352

number_format()

number_format() is simple if you keep it on paper. Meera uses it for number_format on Meera's board in lab hour.

number_format() on the board: one number_format step Meera can write from memory. Then say what number_format on Meera's board looks like after.

number_format() exists so Meera can keep number_format on Meera's board correct in lab hour.

Use number_format() when number_format on Meera's board must stay clear. If a simpler PHP step works, use that instead.

number_format() miss — skipping the failure case for number_format. Fix it before you talk about advanced PHP.

Place number_format() next to nearby PHP work — one number_format step Meera can write from memory is the link.

Viva for number_format(): what it is → one number_format step Meera can write from memory → the mistake (skipping the failure case for number_format).

Diagram

  Browser
      │ POST / GET
      ▼
   .php file
      │
      ▼
   HTML back

Exam tip

Say number_format() in one breath, then one number_format step Meera can write from memory, then skipping the failure case for number_format.

Example

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

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

Short notes

Defnumber_format() — Meera uses it for number_format on Meera's board in lab hour.
Rulenumber_format() → one number_format step Meera can write from memory.
Remembernumber_format() + Apache/Nginx (lab hour).
Usenumber_format() in lab hour (number_format on Meera's board).
Trapnumber_format() — skipping the failure case for number_format.
Exnumber_format() → number_format on Meera's board.

number_format()

Example

Short notes

Questions

number_format()

Example

Short notes

Questions