PHP · Theory

Interfaces

Theory

62/352

Interfaces

Interfaces sits in lab hour. Riya’s job is a Interfaces dry-run. Write that first.

Interfaces on the board: one Interfaces step Riya can write from memory. Then say what a Interfaces dry-run looks like after.

Interfaces exists so Riya can keep a Interfaces dry-run correct in lab hour.

Riya ships Interfaces in lab hour. That is the use case worth saying.

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

After Interfaces, Riya should still remember only reciting the name of Interfaces.

One breath for Interfaces, then a Interfaces dry-run, then only reciting the name of Interfaces. Sit down.

Exam tip

Say Interfaces in one breath, then one Interfaces step Riya can write from memory, then only reciting the name of Interfaces.

Example

<?php
// Interfaces
$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";
}

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

Short notes

DefInterfaces — Riya uses it for a Interfaces dry-run in lab hour.
RuleInterfaces → one Interfaces step Riya can write from memory.
RememberInterfaces + a .php page (lab hour).
UseInterfaces in lab hour (a Interfaces dry-run).
TrapInterfaces — only reciting the name of Interfaces.
ExInterfaces → a Interfaces dry-run.

PHP · Theory

Interfaces

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Theory

62/352

Interfaces

Interfaces sits in lab hour. Riya’s job is a Interfaces dry-run. Write that first.

Interfaces on the board: one Interfaces step Riya can write from memory. Then say what a Interfaces dry-run looks like after.

Interfaces exists so Riya can keep a Interfaces dry-run correct in lab hour.

Riya ships Interfaces in lab hour. That is the use case worth saying.

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

After Interfaces, Riya should still remember only reciting the name of Interfaces.

One breath for Interfaces, then a Interfaces dry-run, then only reciting the name of Interfaces. Sit down.

Exam tip

Say Interfaces in one breath, then one Interfaces step Riya can write from memory, then only reciting the name of Interfaces.

Example

<?php
// Interfaces
$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";
}

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

Short notes

DefInterfaces — Riya uses it for a Interfaces dry-run in lab hour.
RuleInterfaces → one Interfaces step Riya can write from memory.
RememberInterfaces + a .php page (lab hour).
UseInterfaces in lab hour (a Interfaces dry-run).
TrapInterfaces — only reciting the name of Interfaces.
ExInterfaces → a Interfaces dry-run.

Interfaces

Example

Short notes

Questions

Interfaces

Example

Short notes

Questions