PHP · Theory

Open File

Theory

46/352

Open File

Open File is a PHP topic. In plain words you use it for a short Open File example in a college portal page. Don’t start with a slogan — start with that picture.

Smallest example: the smallest Open File example you can type. Type it, run it, and say what you see. If you can do that from memory, you know Open File.

From the example next to this theory — Open File: scores array, print avg, then high marks.

Trap — only saying “Open File” with no example. Fix that before you talk about advanced PHP.

Viva — what is Open File? Then show the smallest Open File example you can type. Then name the trap.

Exam tip

What is Open File? Show this: the smallest Open File example you can type. Trap: only saying “Open File” with no example.

Example

<?php
// Open 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";
}

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

Short notes

DefOpen File — a short Open File example in a college portal page.
Rulethe smallest Open File example you can type
Traponly saying “Open File” with no example
Usea college portal page

PHP · Theory

Open File

← All stacks

Theory

46/352

Open File

Open File is a PHP topic. In plain words you use it for a short Open File example in a college portal page. Don’t start with a slogan — start with that picture.

Smallest example: the smallest Open File example you can type. Type it, run it, and say what you see. If you can do that from memory, you know Open File.

From the example next to this theory — Open File: scores array, print avg, then high marks.

Trap — only saying “Open File” with no example. Fix that before you talk about advanced PHP.

Viva — what is Open File? Then show the smallest Open File example you can type. Then name the trap.

Exam tip

What is Open File? Show this: the smallest Open File example you can type. Trap: only saying “Open File” with no example.

Example

<?php
// Open 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";
}

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

Short notes

DefOpen File — a short Open File example in a college portal page.
Rulethe smallest Open File example you can type
Traponly saying “Open File” with no example
Usea college portal page

Open File

Example

Short notes

Questions

Open File

Example

Short notes

Questions