PHP · Theory

array_slice()

Theory

111/352

array_slice()

Isha only reaches for array_slice() (function) when Isha walking through array_slice function has to stay correct in a small live site.

Keep array_slice() (function) small. Isha should finish Isha walking through array_slice function in a few lines, not a 40-line dump.

Skip array_slice() (function) and skipping the failure case for array_slice function shows up in a small live site.

Use array_slice() (function) when Isha walking through array_slice function must stay clear. If a simpler PHP step works, use that instead.

Don’t do this with array_slice() (function): skipping the failure case for array_slice function. Interviewers spot it in ten seconds.

array_slice() (function) is not a lonely heading. Isha ties it to Isha walking through array_slice function.

Viva for array_slice() (function): what it is → one array_slice function step Isha can write from memory → the mistake (skipping the failure case for array_slice function).

Exam tip

Board: Isha walking through array_slice function. Dry-run array_slice() (function). Name the trap: skipping the failure case for array_slice function.

Example

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

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

Short notes

Defarray_slice() (function) — Isha uses it for Isha walking through array_slice function in a small live site.
Rulearray_slice() (function) → one array_slice function step Isha can write from memory.
Rememberarray_slice() (function) + a .php page (a small live site).
Usearray_slice() (function) in a small live site (Isha walking through array_slice function).
Traparray_slice() (function) — skipping the failure case for array_slice function.
Exarray_slice() (function) → Isha walking through array_slice function.

PHP · Theory

array_slice()

← All stacks

Theory

111/352

array_slice()

Isha only reaches for array_slice() (function) when Isha walking through array_slice function has to stay correct in a small live site.

Keep array_slice() (function) small. Isha should finish Isha walking through array_slice function in a few lines, not a 40-line dump.

Skip array_slice() (function) and skipping the failure case for array_slice function shows up in a small live site.

Use array_slice() (function) when Isha walking through array_slice function must stay clear. If a simpler PHP step works, use that instead.

Don’t do this with array_slice() (function): skipping the failure case for array_slice function. Interviewers spot it in ten seconds.

array_slice() (function) is not a lonely heading. Isha ties it to Isha walking through array_slice function.

Viva for array_slice() (function): what it is → one array_slice function step Isha can write from memory → the mistake (skipping the failure case for array_slice function).

Exam tip

Board: Isha walking through array_slice function. Dry-run array_slice() (function). Name the trap: skipping the failure case for array_slice function.

Example

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

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

Short notes

Defarray_slice() (function) — Isha uses it for Isha walking through array_slice function in a small live site.
Rulearray_slice() (function) → one array_slice function step Isha can write from memory.
Rememberarray_slice() (function) + a .php page (a small live site).
Usearray_slice() (function) in a small live site (Isha walking through array_slice function).
Traparray_slice() (function) — skipping the failure case for array_slice function.
Exarray_slice() (function) → Isha walking through array_slice function.

array_slice()

Example

Short notes

Questions

array_slice()

Example

Short notes

Questions