PHP · Theory

strchr()

Theory

240/352

strchr()

strchr() is simple if you keep it on paper. Asha uses it for a strchr dry-run in a first job task.

strchr() on the board — one strchr step Asha can write from memory. Then say what a strchr dry-run looks like after.

strchr() exists so Asha can keep a strchr dry-run correct in a first job task.

Asha ships strchr() in a first job task. That is the use case worth saying.

strchr() trap — copy-pasting strchr without a dry-run. Asha loses marks for that every viva.

strchr() is not a lonely heading. Asha ties it to a strchr dry-run.

Viva for strchr(): what it is → one strchr step Asha can write from memory → the mistake (copy-pasting strchr without a dry-run).

Exam tip

Board: a strchr dry-run. Dry-run strchr(). Name the trap: copy-pasting strchr without a dry-run.

Example

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

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

Short notes

Defstrchr() — Asha uses it for a strchr dry-run in a first job task.
Rulestrchr() → one strchr step Asha can write from memory.
Rememberstrchr() + the PHP runtime (a first job task).
Usestrchr() in a first job task (a strchr dry-run).
Trapstrchr() — copy-pasting strchr without a dry-run.
Exstrchr() → a strchr dry-run.

PHP · Theory

strchr()

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Theory

240/352

strchr()

strchr() is simple if you keep it on paper. Asha uses it for a strchr dry-run in a first job task.

strchr() on the board — one strchr step Asha can write from memory. Then say what a strchr dry-run looks like after.

strchr() exists so Asha can keep a strchr dry-run correct in a first job task.

Asha ships strchr() in a first job task. That is the use case worth saying.

strchr() trap — copy-pasting strchr without a dry-run. Asha loses marks for that every viva.

strchr() is not a lonely heading. Asha ties it to a strchr dry-run.

Viva for strchr(): what it is → one strchr step Asha can write from memory → the mistake (copy-pasting strchr without a dry-run).

Exam tip

Board: a strchr dry-run. Dry-run strchr(). Name the trap: copy-pasting strchr without a dry-run.

Example

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

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

Short notes

Defstrchr() — Asha uses it for a strchr dry-run in a first job task.
Rulestrchr() → one strchr step Asha can write from memory.
Rememberstrchr() + the PHP runtime (a first job task).
Usestrchr() in a first job task (a strchr dry-run).
Trapstrchr() — copy-pasting strchr without a dry-run.
Exstrchr() → a strchr dry-run.

strchr()

Example

Short notes

Questions

strchr()

Example

Short notes

Questions