Hey everyone,

I'm relatively new to PHP and I came across the uasort() function while working on a project. I've read the documentation, but I'm still having some trouble understanding how it works and where it can be useful.

From what I understand, the uasort() function is used to sort an array by its values, while maintaining the key-value association. However, I'm having a hard time grasping the concept and finding a clear example that helps me comprehend it better.

Can anyone please provide a simple example that demonstrates how the uasort() function can be used effectively? It would be great if you could also explain the steps involved in the sorting process, so I can understand the logic behind it.

Your help would be greatly appreciated! Thanks in advance.

Hey folks,

I came across this discussion and wanted to contribute my personal experience with the uasort() function. I had a situation where I needed to sort an array of books based on their ratings, while still maintaining the key-value associations.

Let me share an example that might give you a practical understanding of how uasort() can be used effectively:

In this case, I wanted to sort the array in descending order based on the ratings of the books. Here's how I accomplished it using uasort():

Here, the compareRatings() function compares the ratings ($a and $b) and returns -1 if $a is greater than $b, 0 if they are equal, and 1 if $a is less than $b. uasort() then uses this comparison function to sort the array accordingly.

After executing the code, the $books array will be sorted in descending order based on the ratings, while preserving the key-value associations:

I hope this example gives you a practical understanding of how uasort() can be used to sort arrays while maintaining key-value associations based on specific criteria. If you have any further inquiries, feel free to ask!

Cheers!