Why doesnt PHP array_merge handle duplicate keys well?
📻 PHPs array_merge overwrites values with the same key.
📻 But, it doesnt merge values; it only replaces them.
📻 Use array union operators for preserving multiple values.
📻 For unique key handling, use custom merging strategies.
📻 This ensures better control over data integration.
In PHP, the `array_merge()` function is widely used to combine arrays. But, many developers are surprised by how it handles duplicate keys. This lesson explores why `array_merge()` may not work as you expect when dealing with arrays containing duplicate keys. Understand the nuances of PHP array merging and discover alternative approaches for managing key conflicts. Learn how to control key conflicts effectively in your code.
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