PHP · Theory

strtoupper()

Theory

264/352

strtoupper()

strtoupper() is simple if you keep it on paper. Ananya uses it for a strtoupper dry-run in a first job task.

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

Without strtoupper(), a first job task gets messy and a strtoupper dry-run is hard to trust.

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

strtoupper() miss — skipping the failure case for strtoupper. Fix it before you talk about advanced PHP.

After strtoupper(), Ananya should still remember skipping the failure case for strtoupper.

Close strtoupper() with: “If I skip it, a strtoupper dry-run goes wrong like this: skipping the failure case for strtoupper.”

Exam tip

Board: a strtoupper dry-run. Dry-run strtoupper(). Name the trap: skipping the failure case for strtoupper.

Example

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

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

Short notes

Defstrtoupper() — Ananya uses it for a strtoupper dry-run in a first job task.
Rulestrtoupper() → one strtoupper step Ananya can write from memory.
Rememberstrtoupper() + Apache/Nginx (a first job task).
Usestrtoupper() in a first job task (a strtoupper dry-run).
Trapstrtoupper() — skipping the failure case for strtoupper.
Exstrtoupper() → a strtoupper dry-run.

PHP · Theory

strtoupper()

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Theory

264/352

strtoupper()

strtoupper() is simple if you keep it on paper. Ananya uses it for a strtoupper dry-run in a first job task.

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

Without strtoupper(), a first job task gets messy and a strtoupper dry-run is hard to trust.

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

strtoupper() miss — skipping the failure case for strtoupper. Fix it before you talk about advanced PHP.

After strtoupper(), Ananya should still remember skipping the failure case for strtoupper.

Close strtoupper() with: “If I skip it, a strtoupper dry-run goes wrong like this: skipping the failure case for strtoupper.”

Exam tip

Board: a strtoupper dry-run. Dry-run strtoupper(). Name the trap: skipping the failure case for strtoupper.

Example

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

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

Short notes

Defstrtoupper() — Ananya uses it for a strtoupper dry-run in a first job task.
Rulestrtoupper() → one strtoupper step Ananya can write from memory.
Rememberstrtoupper() + Apache/Nginx (a first job task).
Usestrtoupper() in a first job task (a strtoupper dry-run).
Trapstrtoupper() — skipping the failure case for strtoupper.
Exstrtoupper() → a strtoupper dry-run.

strtoupper()

Example

Short notes

Questions

strtoupper()

Example

Short notes

Questions