PHP · Theory

strcspn()

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Theory

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strcspn()

strcspn() is simple if you keep it on paper. Sara uses it for Sara walking through strcspn in a small live site.

For strcspn(), Apache/Nginx is in play. Don’t blame it until you have traced Sara walking through strcspn.

Skip strcspn() and only reciting the name of strcspn shows up in a small live site.

strcspn() shows up in a small live site. Name Sara walking through strcspn, not “a real-world scenario”.

If Sara walking through strcspn breaks under strcspn(), check only reciting the name of strcspn first.

strcspn() is not a lonely heading. Sara ties it to Sara walking through strcspn.

Close strcspn() with: “If I skip it, Sara walking through strcspn goes wrong like this: only reciting the name of strcspn.”

Exam tip

Board: Sara walking through strcspn. Dry-run strcspn(). Name the trap: only reciting the name of strcspn.

Example

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

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

Short notes

Defstrcspn() — Sara uses it for Sara walking through strcspn in a small live site.
Rulestrcspn() → one strcspn step Sara can write from memory.
Rememberstrcspn() + Apache/Nginx (a small live site).
Usestrcspn() in a small live site (Sara walking through strcspn).
Trapstrcspn() — only reciting the name of strcspn.
Exstrcspn() → Sara walking through strcspn.

PHP · Theory

strcspn()

← All stacks

Theory

243/352

strcspn()

strcspn() is simple if you keep it on paper. Sara uses it for Sara walking through strcspn in a small live site.

For strcspn(), Apache/Nginx is in play. Don’t blame it until you have traced Sara walking through strcspn.

Skip strcspn() and only reciting the name of strcspn shows up in a small live site.

strcspn() shows up in a small live site. Name Sara walking through strcspn, not “a real-world scenario”.

If Sara walking through strcspn breaks under strcspn(), check only reciting the name of strcspn first.

strcspn() is not a lonely heading. Sara ties it to Sara walking through strcspn.

Close strcspn() with: “If I skip it, Sara walking through strcspn goes wrong like this: only reciting the name of strcspn.”

Exam tip

Board: Sara walking through strcspn. Dry-run strcspn(). Name the trap: only reciting the name of strcspn.

Example

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

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

Short notes

Defstrcspn() — Sara uses it for Sara walking through strcspn in a small live site.
Rulestrcspn() → one strcspn step Sara can write from memory.
Rememberstrcspn() + Apache/Nginx (a small live site).
Usestrcspn() in a small live site (Sara walking through strcspn).
Trapstrcspn() — only reciting the name of strcspn.
Exstrcspn() → Sara walking through strcspn.

strcspn()

Example

Short notes

Questions

strcspn()

Example

Short notes

Questions