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PHP · Theory

str_ireplace()

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Theory

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str_ireplace()

If you can teach str_ireplace() using a str_ireplace dry-run, you know it. If you only know the heading, you don’t.

str_ireplace() order: meaning → one str_ireplace step Zara can write from memory → one limit. Dumping ten features helps nobody.

str_ireplace() exists so Zara can keep a str_ireplace dry-run correct in lab hour.

Use str_ireplace() when a str_ireplace dry-run must stay clear. If a simpler PHP step works, use that instead.

str_ireplace() miss — only reciting the name of str_ireplace. Fix it before you talk about advanced PHP.

After str_ireplace(), Zara should still remember only reciting the name of str_ireplace.

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

Exam tip

For str_ireplace(): definition + lab hour + one failure.

Example

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

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

Short notes

  • Defstr_ireplace() — Zara uses it for a str_ireplace dry-run in lab hour.
  • Rulestr_ireplace() → one str_ireplace step Zara can write from memory.
  • Rememberstr_ireplace() + Apache/Nginx (lab hour).
  • Usestr_ireplace() in lab hour (a str_ireplace dry-run).
  • Trapstr_ireplace() — only reciting the name of str_ireplace.
  • Exstr_ireplace() → a str_ireplace dry-run.

Questions

1

What is str_ireplace()? Teach it with a str_ireplace dry-run.

2

When would Zara actually reach for str_ireplace()?

3

Which mistake makes a str_ireplace dry-run fail?

4

Dry-run one str_ireplace step Zara can write from memory and say the result.

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