How to remove duplicate elements from two arrays in php

php method to remove duplicate elements from two arrays: 1. Create a PHP sample file; 2. Use the foreach statement and the unset function to delete the same elements in the two arrays.

The operating environment of this article: Windows 7 system, PHP version 7.1, Dell G3 computer.

How to remove duplicate elements from two arrays in php?

PHP deletes the same elements in two arrays:

The code is as follows:

<?php
	$invite1 = &#39;18,19,20,21,22&#39;;
	$invite2 = &#39;18,19&#39;;
	$a = explode(",",$invite1);
	$b = explode(",",$invite2);
	
	foreach ($a as $key=>$v1) {
		foreach($b as $key2=>$v2){
			if($v1==$v2){
			unset($a[$key]);//删除$a数组同值元素
			unset($b[$key2]);//删除$b数组同值元素
			}
		}
	}
	var_dump($a);	
	var_dump($b);
?>

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