PHP 程序用于查找数组中缺失的元素
phpserver side programmingprogramming更新于 2025/8/25 5:52:17
‘array_diff’ 函数可用于查找数组中缺失的元素。
示例
<?php
function absent($my_list)
{
$my_array = range(min($my_list), max($my_list));
return array_diff($my_array, $my_list);
}
echo "Elements missing from first array are ";
print_r(absent(array(45, 48, 51, 52, 53, 56)));
echo "Elements missing from second array are ";
print_r(absent(array(99, 101, 104, 105)));
?>
输出
Elements missing from first array are Array ( [1] => 46 [2] => 47 [4] => 49 [5] => 50 [9] => 54 [10] => 55 ) Elements missing from second array are Array ( [1] => 100 [3] => 102 [4] => 103 )
定义了一个名为 ‘absent’ 的函数，用于检查最小值和最大值，并生成一个在该范围内的数组。然后，该函数使用 ‘array_diff’ 函数返回此数组与原始数组之间的差值，该函数返回数组中缺失的元素。
