How to implement unduplicated merge arrays by php

This article mainly introduces php how to achieve non-heavy merge arrays, has a certain reference value, interested friends can refer to, I hope you can learn a lot after reading this article, the following let the editor take you to understand it.

Usually we use the + operator or the arrray_merge () function when combining and manipulating numbers. However, when two or more array elements have the same key name, the two methods use the final element to overwrite the other elements (that is, de-duplicate, leaving only one element).

1. PHP provides the function array_merge_recursive () to merge the array.

2. When processing two or more array elements with the same key name, the function does not overwrite the key name, but recurses multiple values of the same key name into an array.

Example

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