PHP · Theory

strlen()

Theory

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Zara only reaches for strlen() when a strlen dry-run has to stay correct in a campus project.

For strlen(), the PHP runtime is in play. Don’t blame it until you have traced a strlen dry-run.

strlen() exists so Zara can keep a strlen dry-run correct in a campus project.

Zara ships strlen() in a campus project. That is the use case worth saying.

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

strlen() is not a lonely heading. Zara ties it to a strlen dry-run.

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

Exam tip

Say strlen() in one breath, then one strlen step Zara can write from memory, then skipping the failure case for strlen.

<?php
$s = "prep,pilot,php";
$parts = explode(",", $s);
echo strtoupper($parts[0]) . " count=" . count($parts);

strlen() — explode splits strings; count works on arrays.