PHP · Theory

sha1_file()

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Theory

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sha1_file()

Priya only reaches for sha1_file() when sha1_file on Priya's board has to stay correct in a viva board.

For sha1_file(), the PHP runtime is in play. Don’t blame it until you have traced sha1_file on Priya's board.

sha1_file() exists so Priya can keep sha1_file on Priya's board correct in a viva board.

sha1_file() shows up in a viva board. Name sha1_file on Priya's board, not “a real-world scenario”.

sha1_file() miss — only reciting the name of sha1_file. Fix it before you talk about advanced PHP.

After sha1_file(), Priya should still remember only reciting the name of sha1_file.

One breath for sha1_file(), then sha1_file on Priya's board, then only reciting the name of sha1_file. Sit down.

Exam tip

For sha1_file(): definition + a viva board + one failure.

Example

<?php
// sha1_file()
$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";
}

sha1_file(): scores array, print avg, then high marks. Say the output.

Short notes

Defsha1_file() — Priya uses it for sha1_file on Priya's board in a viva board.
Rulesha1_file() → one sha1_file step Priya can write from memory.
Remembersha1_file() + the PHP runtime (a viva board).
Usesha1_file() in a viva board (sha1_file on Priya's board).
Trapsha1_file() — only reciting the name of sha1_file.
Exsha1_file() → sha1_file on Priya's board.

PHP · Theory

sha1_file()

← All stacks

Theory

223/352

sha1_file()

Priya only reaches for sha1_file() when sha1_file on Priya's board has to stay correct in a viva board.

For sha1_file(), the PHP runtime is in play. Don’t blame it until you have traced sha1_file on Priya's board.

sha1_file() exists so Priya can keep sha1_file on Priya's board correct in a viva board.

sha1_file() shows up in a viva board. Name sha1_file on Priya's board, not “a real-world scenario”.

sha1_file() miss — only reciting the name of sha1_file. Fix it before you talk about advanced PHP.

After sha1_file(), Priya should still remember only reciting the name of sha1_file.

One breath for sha1_file(), then sha1_file on Priya's board, then only reciting the name of sha1_file. Sit down.

Exam tip

For sha1_file(): definition + a viva board + one failure.

Example

<?php
// sha1_file()
$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";
}

sha1_file(): scores array, print avg, then high marks. Say the output.

Short notes

Defsha1_file() — Priya uses it for sha1_file on Priya's board in a viva board.
Rulesha1_file() → one sha1_file step Priya can write from memory.
Remembersha1_file() + the PHP runtime (a viva board).
Usesha1_file() in a viva board (sha1_file on Priya's board).
Trapsha1_file() — only reciting the name of sha1_file.
Exsha1_file() → sha1_file on Priya's board.

sha1_file()

Example

Short notes

Questions

sha1_file()

Example

Short notes

Questions