PHP · Theory

array_merge()

Theory

140/352

array_merge()

If you can teach array_merge() (function) using array_merge function on Isha's board, you know it. If you only know the heading, you don’t.

array_merge() (function) order: meaning → one array_merge function step Isha can write from memory → one limit. Dumping ten features helps nobody.

array_merge() (function) exists so Isha can keep array_merge function on Isha's board correct in a small live site.

Isha ships array_merge() (function) in a small live site. That is the use case worth saying.

Don’t do this with array_merge() (function): copy-pasting array_merge function without a dry-run. Interviewers spot it in ten seconds.

Place array_merge() (function) next to nearby PHP work — one array_merge function step Isha can write from memory is the link.

Close array_merge() (function) with: “If I skip it, array_merge function on Isha's board goes wrong like this: copy-pasting array_merge function without a dry-run.”

Exam tip

For array_merge() (function): definition + a small live site + one failure.

Example

<?php
// array_merge()
$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_merge(): scores array, print avg, then high marks. Say the output.

Short notes

Defarray_merge() (function) — Isha uses it for array_merge function on Isha's board in a small live site.
Rulearray_merge() (function) → one array_merge function step Isha can write from memory.
Rememberarray_merge() (function) + the PHP runtime (a small live site).
Usearray_merge() (function) in a small live site (array_merge function on Isha's board).
Traparray_merge() (function) — copy-pasting array_merge function without a dry-run.
Exarray_merge() (function) → array_merge function on Isha's board.

PHP · Theory

array_merge()

← All stacks

Theory

140/352

array_merge()

If you can teach array_merge() (function) using array_merge function on Isha's board, you know it. If you only know the heading, you don’t.

array_merge() (function) order: meaning → one array_merge function step Isha can write from memory → one limit. Dumping ten features helps nobody.

array_merge() (function) exists so Isha can keep array_merge function on Isha's board correct in a small live site.

Isha ships array_merge() (function) in a small live site. That is the use case worth saying.

Don’t do this with array_merge() (function): copy-pasting array_merge function without a dry-run. Interviewers spot it in ten seconds.

Place array_merge() (function) next to nearby PHP work — one array_merge function step Isha can write from memory is the link.

Close array_merge() (function) with: “If I skip it, array_merge function on Isha's board goes wrong like this: copy-pasting array_merge function without a dry-run.”

Exam tip

For array_merge() (function): definition + a small live site + one failure.

Example

<?php
// array_merge()
$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_merge(): scores array, print avg, then high marks. Say the output.

Short notes

Defarray_merge() (function) — Isha uses it for array_merge function on Isha's board in a small live site.
Rulearray_merge() (function) → one array_merge function step Isha can write from memory.
Rememberarray_merge() (function) + the PHP runtime (a small live site).
Usearray_merge() (function) in a small live site (array_merge function on Isha's board).
Traparray_merge() (function) — copy-pasting array_merge function without a dry-run.
Exarray_merge() (function) → array_merge function on Isha's board.

array_merge()

Example

Short notes

Questions

array_merge()

Example

Short notes

Questions