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How to compare the difference between two arrays in php

angryTom
angryTomforward
2020-01-27 21:40:234779browse

During development, you may encounter the need to compare the difference between two arrays. So how to use PHP to achieve this? In fact, PHP provides us with such a function: array_diff. Let’s take a look at how to use it.

How to compare the difference between two arrays in php

Commonly used PHP compares the difference between two arrays

array_diff($arr, $arr1);

//比较数组差异
$arr = [1,2,3,4];
 
$arr1 = [1,2,3];
$diff = array_diff($arr, $arr1);
dump($diff);
 
//打印输出如下,函数第二个参数为参数值,没有差异则返回空数组
array(1) {
  [3] => int(4)
}

This article comes from the php tutorial column, welcome to learn.

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