What are the applications of arrays in PHP?

There are many applications of PHP arrays, here are some common examples:

1. Storing and processing form data: PHP’s $_POST and $_GET variables store form data in an array, making it easy to manipulate and work with.
2. Storage of database query results: Database query results are typically returned in the form of an array, allowing for access and manipulation of the results through arrays.
3. Storage and retrieval of configuration files: Configurations can be stored in associative arrays for easy reading and modifying of options.
4. PHP offers a variety of array functions that make it easy to parse and manipulate JSON data.
5. Collection of multiple values: PHP arrays can be used to store a set of related values, such as storing a list of products, a list of users, and so on.
6. Sorting and filtering data: By utilizing array sorting and filtering functions, data can be sorted, filtered, and searched.
7. Store log information: It can be saved in an array for easy processing and analysis later on.
8. Store cached data: Temporary data can be stored in an array for quick access in subsequent operations.

These are just some common scenarios, in fact, the applications of PHP arrays are very diverse and can be flexibly used according to specific needs.