How Can I Efficiently Find Array Entries Based on Object Properties in PHP?

Finding Array Entries by Object Property

If you have an array of objects and need to locate a specific entry based on a property value, there are two primary approaches: iteration or hashmap creation.

Iteration Approach:

This approach is suitable for one-time searches. It involves looping through the array and checking each object for a matching property value:

$item = null;
foreach ($array as $struct) {
    if ($v === $struct->ID) {
        $item = $struct;
        break;
    }
}

Hashmap Creation:

For faster searches, particularly if you need to perform multiple lookups, consider building a hashmap using an associative array. This method involves creating a new array indexed by the object properties of interest:

$hashmap = [];
foreach ($array as $struct) {
    $hashmap[$struct->ID] = $struct;
}

$item = $hashmap[$v];

This allows for instant retrieval of the desired object by its property value. Note that the stdClass objects in your example can be accessed via the arrow operator (->) syntax in PHP.

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