PHP · Theory

Features

Theory

2/352

Features

Features worth saying: runs on the server, embeds in HTML, talks to MySQL/Postgres, sessions and cookies for login, huge hosting, lots of libraries (Composer). Cross-platform: Windows XAMPP or Linux.

Don’t dump twenty marketing bullets. Four is enough: server-side, $variables, forms ($_POST), database with PDO/mysqli.

Trap — listing ‘easy’ and ‘open source’ with no echo example.

Exam tip

Four features: server, forms, session, MySQL. Then echo.

Example

<?php
// Features
$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";
}

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

Short notes

DefServer-side, HTML mix, DB, sessions, Composer.
RuleName four features + one echo.
TrapFeature dump, no code.

PHP · Theory

Features

← All stacks

Theory

2/352

Features

Features worth saying: runs on the server, embeds in HTML, talks to MySQL/Postgres, sessions and cookies for login, huge hosting, lots of libraries (Composer). Cross-platform: Windows XAMPP or Linux.

Don’t dump twenty marketing bullets. Four is enough: server-side, $variables, forms ($_POST), database with PDO/mysqli.

Trap — listing ‘easy’ and ‘open source’ with no echo example.

Exam tip

Four features: server, forms, session, MySQL. Then echo.

Example

<?php
// Features
$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";
}

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

Short notes

DefServer-side, HTML mix, DB, sessions, Composer.
RuleName four features + one echo.
TrapFeature dump, no code.

Features

Example

Short notes

Questions

Features

Example

Short notes

Questions