PHP · Theory

Write File

Theory

48/352

Write File

Sara only reaches for Write File when Sara walking through Write File has to stay correct in a small live site.

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

Write File exists so Sara can keep Sara walking through Write File correct in a small live site.

Use Write File when Sara walking through Write File must stay clear. If a simpler PHP step works, use that instead.

Don’t do this with Write File — only reciting the name of Write File. Interviewers spot it in ten seconds.

Place Write File next to nearby PHP work — one Write File step Sara can write from memory is the link.

Close Write File with: “If I skip it, Sara walking through Write File goes wrong like this: only reciting the name of Write File.”

Exam tip

Board: Sara walking through Write File. Dry-run Write File. Name the trap: only reciting the name of Write File.

Example

<?php
// Write 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";
}

Write File: scores array, print avg, then high marks. Say the output.

Short notes

DefWrite File — Sara uses it for Sara walking through Write File in a small live site.
RuleWrite File → one Write File step Sara can write from memory.
RememberWrite File + Apache/Nginx (a small live site).
UseWrite File in a small live site (Sara walking through Write File).
TrapWrite File — only reciting the name of Write File.
ExWrite File → Sara walking through Write File.

PHP · Theory

Write File

← All stacks

Theory

48/352

Write File

Sara only reaches for Write File when Sara walking through Write File has to stay correct in a small live site.

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

Write File exists so Sara can keep Sara walking through Write File correct in a small live site.

Use Write File when Sara walking through Write File must stay clear. If a simpler PHP step works, use that instead.

Don’t do this with Write File — only reciting the name of Write File. Interviewers spot it in ten seconds.

Place Write File next to nearby PHP work — one Write File step Sara can write from memory is the link.

Close Write File with: “If I skip it, Sara walking through Write File goes wrong like this: only reciting the name of Write File.”

Exam tip

Board: Sara walking through Write File. Dry-run Write File. Name the trap: only reciting the name of Write File.

Example

<?php
// Write 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";
}

Write File: scores array, print avg, then high marks. Say the output.

Short notes

DefWrite File — Sara uses it for Sara walking through Write File in a small live site.
RuleWrite File → one Write File step Sara can write from memory.
RememberWrite File + Apache/Nginx (a small live site).
UseWrite File in a small live site (Sara walking through Write File).
TrapWrite File — only reciting the name of Write File.
ExWrite File → Sara walking through Write File.

Write File

Example

Short notes

Questions

Write File

Example

Short notes

Questions