PHP · Theory

echo()

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Theory

192/352

echo()

Meera only reaches for echo() (function) when Hello, Asha has to stay correct in a web page.

For echo() (function), a .php page is in play. Don’t blame it until you have traced Hello, Asha.

Without echo() (function), a web page gets messy and Hello, Asha is hard to trust.

Use echo() (function) when Hello, Asha must stay clear. If a simpler PHP step works, use that instead.

If Hello, Asha breaks under echo() (function), check missing semicolon first.

echo() (function) is not a lonely heading. Meera ties it to Hello, Asha.

Close echo() (function) with — “If I skip it, Hello, Asha goes wrong like this: missing semicolon.”

Exam tip

Say echo() (function) in one breath, then echo / print, then missing semicolon.

Example

<?php
// echo()
$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";
}

echo(): scores array, print avg, then high marks. Say the output.

Short notes

Defecho() (function) — Meera uses it for Hello, Asha in a web page.
Ruleecho() (function) → echo / print.
Rememberecho() (function) + a .php page (a web page).
Useecho() (function) in a web page (Hello, Asha).
Trapecho() (function) — missing semicolon.
Execho() (function) → Hello, Asha.

PHP · Theory

echo()

← All stacks

Theory

192/352

echo()

Meera only reaches for echo() (function) when Hello, Asha has to stay correct in a web page.

For echo() (function), a .php page is in play. Don’t blame it until you have traced Hello, Asha.

Without echo() (function), a web page gets messy and Hello, Asha is hard to trust.

Use echo() (function) when Hello, Asha must stay clear. If a simpler PHP step works, use that instead.

If Hello, Asha breaks under echo() (function), check missing semicolon first.

echo() (function) is not a lonely heading. Meera ties it to Hello, Asha.

Close echo() (function) with — “If I skip it, Hello, Asha goes wrong like this: missing semicolon.”

Exam tip

Say echo() (function) in one breath, then echo / print, then missing semicolon.

Example

<?php
// echo()
$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";
}

echo(): scores array, print avg, then high marks. Say the output.

Short notes

Defecho() (function) — Meera uses it for Hello, Asha in a web page.
Ruleecho() (function) → echo / print.
Rememberecho() (function) + a .php page (a web page).
Useecho() (function) in a web page (Hello, Asha).
Trapecho() (function) — missing semicolon.
Execho() (function) → Hello, Asha.

echo()

Example

Short notes

Questions

echo()

Example

Short notes

Questions