How to realize the intersection function of php array

This article mainly introduces the php array intersection function how to achieve the relevant knowledge, the content is detailed and easy to understand, the operation is simple and fast, has a certain reference value, I believe that everyone after reading this php array intersection function how to achieve the article will have a harvest, let's take a look.

1. Concept

Array_intersect () is used to compare the intersection of two arrays, returning an array of reserved keys that consists only of the values that appear in the first array and the values that appear in each input array.

2. Grammar

Array_intersect (array1,array2,array3...)

3. Parameters

Array1

Array2

Array3,...

4. Return value

Returns an intersecting array.

5. Examples

$fruit1 = array ("Apple", "Banana", "Orange"); $fruit2 = array ("Pear", "Apple", "Grape"); $fruit3 = array ("Watermelon", "Orange", "Apple"); $intersection = array_intersect ($fruit1, $fruit2, $fruit3); print_r ($intersection); / / output / / Array ([0] = > Apple)? > that's all for the article "how to implement the php array intersection function". Thank you for reading! I believe that everyone has a certain understanding of the knowledge of "how to realize the intersection function of php array". If you want to learn more knowledge, you are welcome to follow the industry information channel.