PHP · Theory

rtrim()

Theory

227/352

rtrim()

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

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

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

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

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

Exam tip

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

Example

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

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

Short notes

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

PHP · Theory

rtrim()

← All stacks

Theory

227/352

rtrim()

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

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

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

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

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

Exam tip

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

Example

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

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

Short notes

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

rtrim()

Example

Short notes

Questions

rtrim()

Example

Short notes

Questions