PHP · Theory

$ and $$

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Theory

11/352

$ and $$

Don’t start $ and $$ with jargon. Start with $marks = 72. That is the whole point.

Keep $ and $$ small. Rohit should finish $marks = 72 in a few lines, not a 40-line dump.

Skip $ and $$ and using marks without $ shows up in a result script.

$ and $$ shows up in a result script. Name $marks = 72, not “a real-world scenario”.

If $marks = 72 breaks under $ and $$, check using marks without $ first.

Place $ and $$ next to nearby PHP work — $name = 'Asha'; is the link.

Close $ and $$ with — “If I skip it, $marks = 72 goes wrong like this: using marks without $.”

Exam tip

Say $ and $$ in one breath, then $name = 'Asha';, then using marks without $.

Example

<?php
// $ and $$
$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";
}

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

Short notes

Def$ and $$ — Rohit uses it for $marks = 72 in a result script.
Rule$ and $$ → $name = 'Asha';.
Remember$ and $$ + a .php page (a result script).
Use$ and $$ in a result script ($marks = 72).
Trap$ and $$ — using marks without $.
Ex$ and $$ → $marks = 72.

PHP · Theory

$ and $$

← All stacks

Theory

11/352

$ and $$

Don’t start $ and $$ with jargon. Start with $marks = 72. That is the whole point.

Keep $ and $$ small. Rohit should finish $marks = 72 in a few lines, not a 40-line dump.

Skip $ and $$ and using marks without $ shows up in a result script.

$ and $$ shows up in a result script. Name $marks = 72, not “a real-world scenario”.

If $marks = 72 breaks under $ and $$, check using marks without $ first.

Place $ and $$ next to nearby PHP work — $name = 'Asha'; is the link.

Close $ and $$ with — “If I skip it, $marks = 72 goes wrong like this: using marks without $.”

Exam tip

Say $ and $$ in one breath, then $name = 'Asha';, then using marks without $.

Example

<?php
// $ and $$
$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";
}

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

Short notes

Def$ and $$ — Rohit uses it for $marks = 72 in a result script.
Rule$ and $$ → $name = 'Asha';.
Remember$ and $$ + a .php page (a result script).
Use$ and $$ in a result script ($marks = 72).
Trap$ and $$ — using marks without $.
Ex$ and $$ → $marks = 72.

$ and $$

Example

Short notes

Questions

$ and $$

Example

Short notes

Questions