How to delete the intersection of two arrays in php

Delete steps: 1. Use array_intersect() to obtain the intersection of two arrays. The syntax "array_intersect(original array 1, (original array 2)" will return an intersection array; 2. Use array_diff() to separate Compare the two original arrays and the intersection array to obtain the difference set, that is, delete the intersection elements and obtain the different elements. The syntax is "array_diff (original array 1, intersection array)" and "array_diff (original array 2, intersection array) ”.

The operating environment of this tutorial: windows7 system, PHP8.1 version, DELL G3 computer

In php, you can use array_intersect( ) and the array_diff() function to delete the intersection of the two arrays.

Implementation steps:

Step 1: Use the array_intersect() function to obtain the intersection of the two arrays

array_intersect() function can compare the values ​​​​of two arrays and return the intersection array of the same elements.

<?php
header(&#39;content-type:text/html;charset=utf-8&#39;);   
$arr1=array(1,2,3,4,5,6,7,8,9);
$arr2=array(2,4,6,8,10,12,14,16);
var_dump($arr1);
var_dump($arr2);
$intersect=array_intersect($arr1,$arr2);
var_dump($intersect);
?>

Step 2 : Use the array_diff() function to delete the intersection of two arrays

Use the array_diff() function to compare the two arrays with the intersection array respectively and obtain the difference set (delete the intersection elements and obtain different elements).

<?php
header(&#39;content-type:text/html;charset=utf-8&#39;);   
$arr1=array(1,2,3,4,5,6,7,8,9);
$arr2=array(2,4,6,8,10,12,14,16);
var_dump($arr1);
var_dump($arr2);

echo "交集数组：";
$intersect=array_intersect($arr1,$arr2);
var_dump($intersect);

$diff1=array_diff($arr1,$intersect);
$diff2=array_diff($arr2,$intersect);
echo "删除交集元素后的两数组：";
var_dump($diff1);
var_dump($diff2);
?>

Description:

array_diff() function is used to compare the values ​​​​of two (or more) arrays and Returns the difference set.

This function compares the values ​​​​of two (or more) arrays (key=>value in value), and returns a difference set array, which includes all the values ​​in the compared in the array (array1), but not in any other parameter array (array2).

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