PHP · Theory

strripos()

Theory

258/352

strripos()

Sara only reaches for strripos() when Sara walking through strripos has to stay correct in a campus project.

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

Skip strripos() and skipping the failure case for strripos shows up in a campus project.

Sara ships strripos() in a campus project. That is the use case worth saying.

Don’t do this with strripos() — skipping the failure case for strripos. Interviewers spot it in ten seconds.

Place strripos() next to nearby PHP work — one strripos step Sara can write from memory is the link.

Close strripos() with: “If I skip it, Sara walking through strripos goes wrong like this: skipping the failure case for strripos.”

Exam tip

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

Example

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

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

Short notes

Defstrripos() — Sara uses it for Sara walking through strripos in a campus project.
Rulestrripos() → one strripos step Sara can write from memory.
Rememberstrripos() + the PHP runtime (a campus project).
Usestrripos() in a campus project (Sara walking through strripos).
Trapstrripos() — skipping the failure case for strripos.
Exstrripos() → Sara walking through strripos.

PHP · Theory

strripos()

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Theory

258/352

strripos()

Sara only reaches for strripos() when Sara walking through strripos has to stay correct in a campus project.

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

Skip strripos() and skipping the failure case for strripos shows up in a campus project.

Sara ships strripos() in a campus project. That is the use case worth saying.

Don’t do this with strripos() — skipping the failure case for strripos. Interviewers spot it in ten seconds.

Place strripos() next to nearby PHP work — one strripos step Sara can write from memory is the link.

Close strripos() with: “If I skip it, Sara walking through strripos goes wrong like this: skipping the failure case for strripos.”

Exam tip

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

Example

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

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

Short notes

Defstrripos() — Sara uses it for Sara walking through strripos in a campus project.
Rulestrripos() → one strripos step Sara can write from memory.
Rememberstrripos() + the PHP runtime (a campus project).
Usestrripos() in a campus project (Sara walking through strripos).
Trapstrripos() — skipping the failure case for strripos.
Exstrripos() → Sara walking through strripos.

strripos()

Example

Short notes

Questions

strripos()

Example

Short notes

Questions