PHP · Theory

Install PHP

← All stacks

Theory

3/352

Install PHP

Install PHP is simple if you keep it on paper. Meera uses it for XAMPP / PHP on PATH in localhost.

For Install PHP, a .php page is in play. Don’t blame it until you have traced XAMPP / PHP on PATH.

Skip Install PHP and editing files outside htdocs then wondering why nothing runs shows up in localhost.

Use Install PHP when XAMPP / PHP on PATH must stay clear. If a simpler PHP step works, use that instead.

If XAMPP / PHP on PATH breaks under Install PHP, check editing files outside htdocs then wondering why nothing runs first.

Install PHP is not a lonely heading. Meera ties it to XAMPP / PHP on PATH.

One breath for Install PHP, then XAMPP / PHP on PATH, then editing files outside htdocs then wondering why nothing runs. Sit down.

Exam tip

Board: XAMPP / PHP on PATH. Dry-run Install PHP. Name the trap: editing files outside htdocs then wondering why nothing runs.

Example

<?php
// Install PHP
$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";
}

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

Short notes

DefInstall PHP — Meera uses it for XAMPP / PHP on PATH in localhost.
RuleInstall PHP → php -v then open localhost.
RememberInstall PHP + a .php page (localhost).
UseInstall PHP in localhost (XAMPP / PHP on PATH).
TrapInstall PHP — editing files outside htdocs then wondering why nothing runs.
ExInstall PHP → XAMPP / PHP on PATH.

PHP · Theory

Install PHP

← All stacks

Theory

3/352

Install PHP

Install PHP is simple if you keep it on paper. Meera uses it for XAMPP / PHP on PATH in localhost.

For Install PHP, a .php page is in play. Don’t blame it until you have traced XAMPP / PHP on PATH.

Skip Install PHP and editing files outside htdocs then wondering why nothing runs shows up in localhost.

Use Install PHP when XAMPP / PHP on PATH must stay clear. If a simpler PHP step works, use that instead.

If XAMPP / PHP on PATH breaks under Install PHP, check editing files outside htdocs then wondering why nothing runs first.

Install PHP is not a lonely heading. Meera ties it to XAMPP / PHP on PATH.

One breath for Install PHP, then XAMPP / PHP on PATH, then editing files outside htdocs then wondering why nothing runs. Sit down.

Exam tip

Board: XAMPP / PHP on PATH. Dry-run Install PHP. Name the trap: editing files outside htdocs then wondering why nothing runs.

Example

<?php
// Install PHP
$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";
}

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

Short notes

DefInstall PHP — Meera uses it for XAMPP / PHP on PATH in localhost.
RuleInstall PHP → php -v then open localhost.
RememberInstall PHP + a .php page (localhost).
UseInstall PHP in localhost (XAMPP / PHP on PATH).
TrapInstall PHP — editing files outside htdocs then wondering why nothing runs.
ExInstall PHP → XAMPP / PHP on PATH.

Install PHP

Example

Short notes

Questions

Install PHP

Example

Short notes

Questions