PHP · Theory

count_chars()

Theory

189/352

count_chars()

If you can teach count_chars() using Amit walking through count_chars, you know it. If you only know the heading, you don’t.

Keep count_chars() small. Amit should finish Amit walking through count_chars in a few lines, not a 40-line dump.

Skip count_chars() and only reciting the name of count_chars shows up in a campus project.

Amit ships count_chars() in a campus project. That is the use case worth saying.

Don’t do this with count_chars() — only reciting the name of count_chars. Interviewers spot it in ten seconds.

count_chars() is not a lonely heading. Amit ties it to Amit walking through count_chars.

One breath for count_chars(), then Amit walking through count_chars, then only reciting the name of count_chars. Sit down.

Exam tip

For count_chars(): definition + a campus project + one failure.

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() — Amit uses it for Amit walking through count_chars in a campus project.
Rulecount_chars() → one count_chars step Amit can write from memory.
Remembercount_chars() + the PHP runtime (a campus project).
Usecount_chars() in a campus project (Amit walking through count_chars).
Trapcount_chars() — only reciting the name of count_chars.
Excount_chars() → Amit walking through count_chars.

PHP · Theory

count_chars()

← All stacks

Theory

189/352

count_chars()

If you can teach count_chars() using Amit walking through count_chars, you know it. If you only know the heading, you don’t.

Keep count_chars() small. Amit should finish Amit walking through count_chars in a few lines, not a 40-line dump.

Skip count_chars() and only reciting the name of count_chars shows up in a campus project.

Amit ships count_chars() in a campus project. That is the use case worth saying.

Don’t do this with count_chars() — only reciting the name of count_chars. Interviewers spot it in ten seconds.

count_chars() is not a lonely heading. Amit ties it to Amit walking through count_chars.

One breath for count_chars(), then Amit walking through count_chars, then only reciting the name of count_chars. Sit down.

Exam tip

For count_chars(): definition + a campus project + one failure.

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() — Amit uses it for Amit walking through count_chars in a campus project.
Rulecount_chars() → one count_chars step Amit can write from memory.
Remembercount_chars() + the PHP runtime (a campus project).
Usecount_chars() in a campus project (Amit walking through count_chars).
Trapcount_chars() — only reciting the name of count_chars.
Excount_chars() → Amit walking through count_chars.

count_chars()

Example

Short notes

Questions

count_chars()

Example

Short notes

Questions