PHP · Theory

count_chars()

Theory

189/352

count_chars()

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

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

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

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

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

Exam tip

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

Example

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

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

Short notes

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

PHP · Theory

count_chars()

← All stacks

Theory

189/352

count_chars()

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

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

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

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

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

Exam tip

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

Example

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

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

Short notes

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

count_chars()

Example

Short notes

Questions

count_chars()

Example

Short notes

Questions