PHP · Theory

strpbrk()

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Theory

254/352

strpbrk()

Sara only reaches for strpbrk() when strpbrk on Sara's board has to stay correct in a small live site.

Do strpbrk() once by hand. one strpbrk step Sara can write from memory. Change one input. Say the new result out loud.

Without strpbrk(), a small live site gets messy and strpbrk on Sara's board is hard to trust.

Sara ships strpbrk() in a small live site. That is the use case worth saying.

strpbrk() trap — only reciting the name of strpbrk. Sara loses marks for that every viva.

After strpbrk(), Sara should still remember only reciting the name of strpbrk.

Viva for strpbrk(): what it is → one strpbrk step Sara can write from memory → the mistake (only reciting the name of strpbrk).

Exam tip

For strpbrk(): definition + a small live site + one failure.

Example

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

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

Short notes

Defstrpbrk() — Sara uses it for strpbrk on Sara's board in a small live site.
Rulestrpbrk() → one strpbrk step Sara can write from memory.
Rememberstrpbrk() + the PHP runtime (a small live site).
Usestrpbrk() in a small live site (strpbrk on Sara's board).
Trapstrpbrk() — only reciting the name of strpbrk.
Exstrpbrk() → strpbrk on Sara's board.

PHP · Theory

strpbrk()

← All stacks

Theory

254/352

strpbrk()

Sara only reaches for strpbrk() when strpbrk on Sara's board has to stay correct in a small live site.

Do strpbrk() once by hand. one strpbrk step Sara can write from memory. Change one input. Say the new result out loud.

Without strpbrk(), a small live site gets messy and strpbrk on Sara's board is hard to trust.

Sara ships strpbrk() in a small live site. That is the use case worth saying.

strpbrk() trap — only reciting the name of strpbrk. Sara loses marks for that every viva.

After strpbrk(), Sara should still remember only reciting the name of strpbrk.

Viva for strpbrk(): what it is → one strpbrk step Sara can write from memory → the mistake (only reciting the name of strpbrk).

Exam tip

For strpbrk(): definition + a small live site + one failure.

Example

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

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

Short notes

Defstrpbrk() — Sara uses it for strpbrk on Sara's board in a small live site.
Rulestrpbrk() → one strpbrk step Sara can write from memory.
Rememberstrpbrk() + the PHP runtime (a small live site).
Usestrpbrk() in a small live site (strpbrk on Sara's board).
Trapstrpbrk() — only reciting the name of strpbrk.
Exstrpbrk() → strpbrk on Sara's board.

strpbrk()

Example

Short notes

Questions

strpbrk()

Example

Short notes

Questions