<ul><li>Caching systems in PHP vary in efficiency and availability, leading some to explore building their own systems due to limitations or preferences.</li><li>Types of caching that can be implemented with PHP alone include session cache, in-memory cache, and file-based cache, with each serving specific purposes.</li><li>Session cache is suitable for user-specific data in a session, helping avoid repeated expensive computations within a single request.</li><li>While the examples provided offer a starting point for creating a caching system in pure PHP, there is room for improvement and expansion based on individual needs and preferences.</li></ul>

Caching with pure PHP

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