PHP · Theory

abs()

Theory

305/352

abs()

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

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

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

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

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

Exam tip

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

Example

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

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

Short notes

Defabs() — a short abs example in a college portal page.
Rulethe smallest abs example you can type
Traponly saying “abs” with no example
Usea college portal page

PHP · Theory

abs()

← All stacks

Theory

305/352

abs()

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

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

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

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

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

Exam tip

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

Example

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

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

Short notes

Defabs() — a short abs example in a college portal page.
Rulethe smallest abs example you can type
Traponly saying “abs” with no example
Usea college portal page

abs()

Example

Short notes

Questions

abs()

Example

Short notes

Questions