How to perform deduplication operation after the PHP array is shuffled?

In PHP, you can use the following steps to disrupt the order of the array and then perform deduplication operations: use the shuffle() function to disrupt the order of the array. Use the array_unique() function to deduplicate the array and remove duplicate elements.

##In PHP, after shuffling the order of the array, you will usually encounter duplication of array elements question. To solve this problem, you can remove duplicate elements through a deduplication operation to ensure that the array only contains unique elements.

Code implementationYou can use the

array_unique()

function to deduplicate the array:

<?php
// 创建一个包含重复元素的数组
$arr = array(1, 2, 3, 4, 5, 2, 3);

// 打乱数组顺序
shuffle($arr);

// 使用 array_unique() 去重
$result = array_unique($arr);

// 输出去重后的数组
print_r($result);
?>

Practical case

Assume there is a The function returns an array containing product IDs, which may contain duplicate IDs. The array needs to be deduplicated to get a list of unique IDs for all products.

<?php
function get_product_ids() {
  // 模拟从数据库获取产品 ID
  return array(1, 2, 3, 4, 5, 2, 3);
}

// 获取产品 ID 数组
$ids = get_product_ids();

// 打乱顺序
shuffle($ids);

// 去重数组
$unique_ids = array_unique($ids);

// 使用去重后的数组
// ...代码逻辑
?>

SummaryBy using the

array_unique()### function, you can deduplicate PHP arrays, remove duplicate elements and ensure that the array only contains unique elements . This is useful in situations where you are dealing with duplicate data. ###

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