PHP · Theory

Headers

Theory

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Headers

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

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

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

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

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

Exam tip

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

Example

<?php
// Headers
$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";
}

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

Short notes

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

PHP · Theory

Headers

← All stacks

Theory

347/352

Headers

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

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

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

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

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

Exam tip

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

Example

<?php
// Headers
$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";
}

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

Short notes

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

Headers

Example

Short notes

Questions

Headers

Example

Short notes

Questions