In PHP, how do I cache objects with examples?

In PHP, caching objects can significantly improve performance, especially when dealing with expensive operations such as database queries or API calls. By storing the results of these operations in a cache, subsequent requests can be served much faster. Below are examples showing how to cache objects using various caching mechanisms in PHP.

Example 1: Using APCu for Caching

APCu (Alternative PHP Cache User) is a popular caching mechanism that allows you to store variables in the shared memory.

<?php // Store an object in cache $myObject = new stdClass(); $myObject->name = "Sample Object"; $myObject->value = 42; apcu_store('my_object', $myObject); // Retrieve an object from cache $cachedObject = apcu_fetch('my_object'); if ($cachedObject) { echo "Object Retrieved: " . $cachedObject->name . " with value " . $cachedObject->value; } else { echo "No object found in cache."; } ?>

Example 2: Using File-Based Caching

This example demonstrates how to implement file-based caching by serializing the object and storing it in a file.

<?php $myObject = new stdClass(); $myObject->name = "File Cache Object"; $myObject->value = 100; // Cache the object in a file file_put_contents('cache/my_object.cache', serialize($myObject)); // Retrieve the object from cache if (file_exists('cache/my_object.cache')) { $cachedObject = unserialize(file_get_contents('cache/my_object.cache')); echo "Object Retrieved: " . $cachedObject->name . " with value " . $cachedObject->value; } else { echo "No object found in cache."; } ?>

Caching in PHP APCu Object Caching PHP Performance

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