PHP · Theory

vsprintf()

Theory

275/352

vsprintf()

vsprintf() is a PHP topic. In plain words you use it for Hello, Asha in a web page. Don’t start with a slogan — start with that picture.

Smallest example: echo / print. Type it, run it, and say what you see. If you can do that from memory, you know vsprintf().

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

Trap — missing semicolon. Fix that before you talk about advanced PHP.

Viva — what is vsprintf()? Then show echo / print. Then name the trap.

Exam tip

What is vsprintf()? Show this: echo / print. Trap: missing semicolon.

Example

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

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

Short notes

Defvsprintf() — Hello, Asha in a web page.
Ruleecho / print
Trapmissing semicolon
Usea web page

PHP · Theory

vsprintf()

← All stacks

Theory

275/352

vsprintf()

vsprintf() is a PHP topic. In plain words you use it for Hello, Asha in a web page. Don’t start with a slogan — start with that picture.

Smallest example: echo / print. Type it, run it, and say what you see. If you can do that from memory, you know vsprintf().

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

Trap — missing semicolon. Fix that before you talk about advanced PHP.

Viva — what is vsprintf()? Then show echo / print. Then name the trap.

Exam tip

What is vsprintf()? Show this: echo / print. Trap: missing semicolon.

Example

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

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

Short notes

Defvsprintf() — Hello, Asha in a web page.
Ruleecho / print
Trapmissing semicolon
Usea web page

vsprintf()

Example

Short notes

Questions

vsprintf()

Example

Short notes

Questions