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PHP · Theory

array_search()

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Theory

160/352

array_search()

array_search() (function) is simple if you keep it on paper. Ananya uses it for array_search function on Ananya's board in a viva board.

Keep array_search() (function) small. Ananya should finish array_search function on Ananya's board in a few lines, not a 40-line dump.

Without array_search() (function), a viva board gets messy and array_search function on Ananya's board is hard to trust.

array_search() (function) shows up in a viva board. Name array_search function on Ananya's board, not “a real-world scenario”.

Don’t do this with array_search() (function): only reciting the name of array_search function. Interviewers spot it in ten seconds.

array_search() (function) is not a lonely heading. Ananya ties it to array_search function on Ananya's board.

Viva for array_search() (function): what it is → one array_search function step Ananya can write from memory → the mistake (only reciting the name of array_search function).

Exam tip

Board: array_search function on Ananya's board. Dry-run array_search() (function). Name the trap: only reciting the name of array_search function.

Example

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

Short notes

  • Defarray_search() (function) — Ananya uses it for array_search function on Ananya's board in a viva board.
  • Rulearray_search() (function) → one array_search function step Ananya can write from memory.
  • Rememberarray_search() (function) + a .php page (a viva board).
  • Usearray_search() (function) in a viva board (array_search function on Ananya's board).
  • Traparray_search() (function) — only reciting the name of array_search function.
  • Exarray_search() (function) → array_search function on Ananya's board.

Questions

1

What is array_search() (function)? Teach it with array_search function on Ananya's board.

2

If you skip array_search() (function), what breaks in a viva board?

3

How do you catch only reciting the name of array_search function?

4

Write the smallest array_search() (function) step on array_search function on Ananya's board. What happens?

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