Скачать или смотреть Improve Your PHP Function: Speed Up reCalculateAll Execution Time

Discover how to optimize your PHP function for performance and reduce execution time when dealing with large datasets.
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This video is based on the question https://stackoverflow.com/q/65275033/ asked by the user 'crackry' ( https://stackoverflow.com/u/14779079/ ) and on the answer https://stackoverflow.com/a/65280907/ provided by the user 'sysdevs' ( https://stackoverflow.com/u/7722512/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

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Speeding Up Your PHP Function with Smart Optimization Techniques

Understanding the Problem

If you are working with PHP and handling large transactions for clients, you might encounter slow execution times for your functions. This can be especially frustrating when dealing with a growing number of transactions. As noted in the original question, the reCalculateAll function was taking 20 seconds to execute, with its time increasing as new transactions were added.

This issue was primarily caused by inefficient looping and data handling within the function. Let's delve into how to optimize this function to enhance performance while ensuring that it correctly calculates client debts.

Analyzing the Original Function

The original reCalculateAll function had several issues which contributed to its sluggish performance:

Nested Loops: The use of multiple nested loops made it inefficient, as it was repetitively fetching data from the database.

Redundant Queries: Repeatedly executing queries inside the loop hindered performance.

Fetching Unused Data: It fetched a lot of unnecessary data which was not needed for recalculating funds.

The Solution: Streamlined Function Structure

To optimize the function, we can adopt a new approach that drastically reduces the number of operations the function performs. Here’s how the revised function is structured:

Refactoring the Function

The new version of the reCalculateAll function eliminates redundant queries and utilizes a single loop to process the data efficiently.

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Key Improvements Explained

Single SQL Query: By fetching only the id and added_amount, we minimize the data retrieved.

No Nested Queries: The inner workings of the previous function are streamlined. The updates for each transaction are kept efficient, with a clear flow.

Use of Parameters Efficiently: The use of bind_param ensures that our SQL queries are safe and efficient, preventing unnecessary overhead.

Conclusion

By restructuring the reCalculateAll function to reduce complexity and streamline database access, we achieve a significant boost in performance. This optimized version helps ensure that your PHP applications not only function correctly under heavy load but do so swiftly, providing a better experience for users.

Whenever you're working with PHP and MySQL, remember that efficiency in coding practices can have a dramatic effect on execution speed. Armed with these techniques, you can simplify your scripts and ensure they run like a well-oiled machine, no matter the number of transactions!

Keep optimizing, and watch your PHP applications thrive!