PHP · Theory

explode()

Theory

193/352

explode()

explode() (function) is a PHP topic. In plain words you use it for function add($a, $b) in a marks helper. Don’t start with a slogan — start with that picture.

Smallest example: function name($x) { return $x; }. Type it, run it, and say what you see. If you can do that from memory, you know explode() (function).

From the example next to this theory — explode() — explode splits strings; count works on arrays.

Trap — no return so the caller gets null. Fix that before you talk about advanced PHP.

Viva — what is explode() (function)? Then show function name($x) { return $x; }. Then name the trap.

Exam tip

What is explode() (function)? Show this: function name($x) { return $x; }. Trap: no return so the caller gets null.

Example

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

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

Short notes

Defexplode() (function) — function add($a, $b) in a marks helper.
Rulefunction name($x) { return $x; }
Trapno return so the caller gets null
Usea marks helper

PHP · Theory

explode()

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Theory

193/352

explode()

explode() (function) is a PHP topic. In plain words you use it for function add($a, $b) in a marks helper. Don’t start with a slogan — start with that picture.

Smallest example: function name($x) { return $x; }. Type it, run it, and say what you see. If you can do that from memory, you know explode() (function).

From the example next to this theory — explode() — explode splits strings; count works on arrays.

Trap — no return so the caller gets null. Fix that before you talk about advanced PHP.

Viva — what is explode() (function)? Then show function name($x) { return $x; }. Then name the trap.

Exam tip

What is explode() (function)? Show this: function name($x) { return $x; }. Trap: no return so the caller gets null.

Example

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

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

Short notes

Defexplode() (function) — function add($a, $b) in a marks helper.
Rulefunction name($x) { return $x; }
Trapno return so the caller gets null
Usea marks helper

explode()

Example

Short notes

Questions

explode()

Example

Short notes

Questions