PHP · Theory

Features

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Theory

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Features

Features (of php) is simple if you keep it on paper. Ananya uses it for a hello.php page in a college portal.

Features (of php) on the board — <?php echo 'Hi'; ?>. Then say what a hello.php page looks like after.

Without Features (of php), a college portal gets messy and a hello.php page is hard to trust.

Use Features (of php) when a hello.php page must stay clear. If a simpler PHP step works, use that instead.

Features (of php) trap — calling PHP a database. Ananya loses marks for that every viva.

After Features (of php), Ananya should still remember calling PHP a database.

Close Features (of php) with — “If I skip it, a hello.php page goes wrong like this: calling PHP a database.”

Exam tip

Board: a hello.php page. Dry-run Features (of php). Name the trap: calling PHP a database.

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

DefFeatures (of php) — Ananya uses it for a hello.php page in a college portal.
RuleFeatures (of php) → <?php echo 'Hi'; ?>.
RememberFeatures (of php) + Apache/Nginx (a college portal).
UseFeatures (of php) in a college portal (a hello.php page).
TrapFeatures (of php) — calling PHP a database.
ExFeatures (of php) → a hello.php page.

PHP · Theory

Features

← All stacks

Theory

2/352

Features

Features (of php) is simple if you keep it on paper. Ananya uses it for a hello.php page in a college portal.

Features (of php) on the board — <?php echo 'Hi'; ?>. Then say what a hello.php page looks like after.

Without Features (of php), a college portal gets messy and a hello.php page is hard to trust.

Use Features (of php) when a hello.php page must stay clear. If a simpler PHP step works, use that instead.

Features (of php) trap — calling PHP a database. Ananya loses marks for that every viva.

After Features (of php), Ananya should still remember calling PHP a database.

Close Features (of php) with — “If I skip it, a hello.php page goes wrong like this: calling PHP a database.”

Exam tip

Board: a hello.php page. Dry-run Features (of php). Name the trap: calling PHP a database.

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

DefFeatures (of php) — Ananya uses it for a hello.php page in a college portal.
RuleFeatures (of php) → <?php echo 'Hi'; ?>.
RememberFeatures (of php) + Apache/Nginx (a college portal).
UseFeatures (of php) in a college portal (a hello.php page).
TrapFeatures (of php) — calling PHP a database.
ExFeatures (of php) → a hello.php page.

Features

Example

Short notes

Questions

Features

Example

Short notes

Questions