PHP · Theory

strspn()

Theory

260/352

strspn()

If you can teach strspn() using strspn on Ananya's board, you know it. If you only know the heading, you don’t.

strspn() on the board: one strspn step Ananya can write from memory. Then say what strspn on Ananya's board looks like after.

Skip strspn() and skipping the failure case for strspn shows up in lab hour.

Use strspn() when strspn on Ananya's board must stay clear. If a simpler PHP step works, use that instead.

strspn() trap — skipping the failure case for strspn. Ananya loses marks for that every viva.

strspn() is not a lonely heading. Ananya ties it to strspn on Ananya's board.

Viva for strspn(): what it is → one strspn step Ananya can write from memory → the mistake (skipping the failure case for strspn).

Exam tip

For strspn(): definition + lab hour + one failure.

Example

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

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

Short notes

Defstrspn() — Ananya uses it for strspn on Ananya's board in lab hour.
Rulestrspn() → one strspn step Ananya can write from memory.
Rememberstrspn() + Apache/Nginx (lab hour).
Usestrspn() in lab hour (strspn on Ananya's board).
Trapstrspn() — skipping the failure case for strspn.
Exstrspn() → strspn on Ananya's board.

PHP · Theory

strspn()

← All stacks

Theory

260/352

strspn()

If you can teach strspn() using strspn on Ananya's board, you know it. If you only know the heading, you don’t.

strspn() on the board: one strspn step Ananya can write from memory. Then say what strspn on Ananya's board looks like after.

Skip strspn() and skipping the failure case for strspn shows up in lab hour.

Use strspn() when strspn on Ananya's board must stay clear. If a simpler PHP step works, use that instead.

strspn() trap — skipping the failure case for strspn. Ananya loses marks for that every viva.

strspn() is not a lonely heading. Ananya ties it to strspn on Ananya's board.

Viva for strspn(): what it is → one strspn step Ananya can write from memory → the mistake (skipping the failure case for strspn).

Exam tip

For strspn(): definition + lab hour + one failure.

Example

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

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

Short notes

Defstrspn() — Ananya uses it for strspn on Ananya's board in lab hour.
Rulestrspn() → one strspn step Ananya can write from memory.
Rememberstrspn() + Apache/Nginx (lab hour).
Usestrspn() in lab hour (strspn on Ananya's board).
Trapstrspn() — skipping the failure case for strspn.
Exstrspn() → strspn on Ananya's board.

strspn()

Example

Short notes

Questions

strspn()

Example

Short notes

Questions