PHP 8 Programming Tips, Tricks, and Best Practices/

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Solution: Serialize and Unserialize Different Data Structures

Solution: Serialize and Unserialize Different Data Structures

A detailed review of the solutions to the previous challenge involving serialization and unserailization of several data structures such as arrays, SPL library objects, and doubly linked lists.

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The code widget below contains the solution to the challenge. We will also go through a step-by-step explanation of the solution.

Solution to Task 1

This task demonstrates how to initialize an array object with two keys. Serialize and unserialize the ArrayObject and then iterate over it to display its contents.

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<?php
// create an ArrayObject and add some data
$arrayObj = new ArrayObject([
    "name" => "Alice",
    "age" => 30
]);
// serialize the ArrayObject
$data = serialize($arrayObj);
// unserialize the data
$arrayObj = unserialize($data);
// get the name and age values
$name = $arrayObj["name"];
$age = $arrayObj["age"];
// create an ArrayIterator and iterate over the data
$iterator = $arrayObj->getIterator();
while($iterator->valid()) {
    echo $iterator->key() . ": " . $iterator->current() . "\n";
    $iterator->next();
}
?>

Let’s get into the code.

  • Lines 3–6: An ArrayObject is created with two keys, name and age, and their ...