PHP · Theory

Data Types

Theory

14/352

Data Types

Data Types is simple if you keep it on paper. Meera uses it for a Data Types dry-run in a viva board.

Do Data Types once by hand. one Data Types step Meera can write from memory. Change one input. Say the new result out loud.

Without Data Types, a viva board gets messy and a Data Types dry-run is hard to trust.

Data Types shows up in a viva board. Name a Data Types dry-run, not “a real-world scenario”.

Don’t do this with Data Types — only reciting the name of Data Types. Interviewers spot it in ten seconds.

Data Types is not a lonely heading. Meera ties it to a Data Types dry-run.

Close Data Types with — “If I skip it, a Data Types dry-run goes wrong like this: only reciting the name of Data Types.”

Exam tip

For Data Types: definition + a viva board + one failure.

Example

<?php
// Data Types
$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";
}

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

Short notes

DefData Types — Meera uses it for a Data Types dry-run in a viva board.
RuleData Types → one Data Types step Meera can write from memory.
RememberData Types + a .php page (a viva board).
UseData Types in a viva board (a Data Types dry-run).
TrapData Types — only reciting the name of Data Types.
ExData Types → a Data Types dry-run.

PHP · Theory

Data Types

← All stacks

Theory

14/352

Data Types

Data Types is simple if you keep it on paper. Meera uses it for a Data Types dry-run in a viva board.

Do Data Types once by hand. one Data Types step Meera can write from memory. Change one input. Say the new result out loud.

Without Data Types, a viva board gets messy and a Data Types dry-run is hard to trust.

Data Types shows up in a viva board. Name a Data Types dry-run, not “a real-world scenario”.

Don’t do this with Data Types — only reciting the name of Data Types. Interviewers spot it in ten seconds.

Data Types is not a lonely heading. Meera ties it to a Data Types dry-run.

Close Data Types with — “If I skip it, a Data Types dry-run goes wrong like this: only reciting the name of Data Types.”

Exam tip

For Data Types: definition + a viva board + one failure.

Example

<?php
// Data Types
$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";
}

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

Short notes

DefData Types — Meera uses it for a Data Types dry-run in a viva board.
RuleData Types → one Data Types step Meera can write from memory.
RememberData Types + a .php page (a viva board).
UseData Types in a viva board (a Data Types dry-run).
TrapData Types — only reciting the name of Data Types.
ExData Types → a Data Types dry-run.

Data Types

Example

Short notes

Questions

Data Types

Example

Short notes

Questions