Comprehensive Guide to CodeIgniter Performance Optimization for Faster PHP Websites

Improve Query Efficiency

Ensure SQL queries are efficient and make proper use of indexes to significantly speed up database responses and reduce page load times.

Reduce PHP Object Creation

Frequent creation of PHP objects increases memory consumption and execution time. Instantiate objects only when necessary to lower resource overhead and improve script performance.

Optimize Function Calls

Excessive function calls can slow down script execution. Merging multiple small functions or minimizing calls effectively enhances performance.

Avoid Overusing Global Variables

Global variables incur higher search costs within scripts; using local variables instead helps reduce runtime overhead.

Properly Configure PHP and CodeIgniter Environment

Adjust memory limits, enable caching and compression to ensure the framework configuration suits project needs, which is key to boosting performance.

Other Practical Optimization Strategies

Using load balancers to distribute traffic across multiple servers can effectively support high traffic volumes and improve website stability.

Leveraging CDN to distribute static resources worldwide speeds up file loading on the user end and enhances the access experience.

Enabling GZIP compression effectively reduces page size and accelerates page delivery.

If supported by the server, enabling HTTP/2 protocol reduces latency and improves page loading efficiency.

Conclusion

By applying these methods, your CodeIgniter website will achieve significant performance improvements, respond faster, run more stably, handle higher traffic volumes, and deliver a superior user experience.