PHP · Theory

Data Types

Theory

14/352

Data Types

Data Types is a PHP topic. In plain words you use it for a short Data Types example in a college portal page. Don’t start with a slogan — start with that picture.

Smallest example: the smallest Data Types example you can type. Type it, run it, and say what you see. If you can do that from memory, you know Data Types.

From the example next to this theory — Data Types: scores array, print avg, then high marks.

Trap — only saying “Data Types” with no example. Fix that before you talk about advanced PHP.

Viva — what is Data Types? Then show the smallest Data Types example you can type. Then name the trap.

Exam tip

What is Data Types? Show this: the smallest Data Types example you can type. Trap: only saying “Data Types” with no example.

Example

<?php
// Data Types
$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";
}

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

Short notes

DefData Types — a short Data Types example in a college portal page.
Rulethe smallest Data Types example you can type
Traponly saying “Data Types” with no example
Usea college portal page

PHP · Theory

Data Types

← All stacks

Theory

14/352

Data Types

Data Types is a PHP topic. In plain words you use it for a short Data Types example in a college portal page. Don’t start with a slogan — start with that picture.

Smallest example: the smallest Data Types example you can type. Type it, run it, and say what you see. If you can do that from memory, you know Data Types.

From the example next to this theory — Data Types: scores array, print avg, then high marks.

Trap — only saying “Data Types” with no example. Fix that before you talk about advanced PHP.

Viva — what is Data Types? Then show the smallest Data Types example you can type. Then name the trap.

Exam tip

What is Data Types? Show this: the smallest Data Types example you can type. Trap: only saying “Data Types” with no example.

Example

<?php
// Data Types
$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";
}

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

Short notes

DefData Types — a short Data Types example in a college portal page.
Rulethe smallest Data Types example you can type
Traponly saying “Data Types” with no example
Usea college portal page

Data Types

Example

Short notes

Questions

Data Types

Example

Short notes

Questions