In PHP, how do I deduplicate objects with SPL?

In PHP, you can use the Standard PHP Library (SPL) to deduplicate objects. An effective approach is to leverage SPL's SplObjectStorage, which allows you to store unique objects and ensures no duplicates are stored.

Keywords: PHP, SPL, deduplicate, objects, SplObjectStorage

Description: This example demonstrates how to use SPL to remove duplicate objects in PHP.

Here is an example illustrating the use of SPL to deduplicate objects:


        <?php
        class Person {
            public $name;
        
            public function __construct($name) {
                $this->name = $name;
            }
        }
        
        $people = [
            new Person("Alice"),
            new Person("Bob"),
            new Person("Alice"), // Duplicate
            new Person("Charlie"),
        ];
        
        $uniquePeople = new SplObjectStorage();
        
        foreach ($people as $person) {
            $uniquePeople[$person] = true; // Adds the object to the storage
        }
        
        echo "Unique People: <br>";
        foreach ($uniquePeople as $person) {
            echo $person->name . "<br>";
        }
        ?>

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In PHP, how do I deduplicate objects with SPL?

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In PHP, how do I deduplicate objects with SPL?

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