PHP · Theory

Filters

Theory

328/352

Filters

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

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

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

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

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

Exam tip

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

Example

<?php
// Filters
$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";
}

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

Short notes

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

PHP · Theory

Filters

← All stacks

Theory

328/352

Filters

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

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

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

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

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

Exam tip

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

Example

<?php
// Filters
$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";
}

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

Short notes

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

Filters

Example

Short notes

Questions

Filters

Example

Short notes

Questions