数组切片($data,1,2)对于我的情况是什么等价物？
数组切片($data,1,2)对于我的情况是什么等价物？
提问于 2011-04-13 04:07:06
代码：
$data = array("vanilla", "strawberry", "mango", "peaches");
print_r(array_slice($data, 1, 2));
Output:
Array
(
[0] => strawberry
[1] => mango
)在我的例子中：
$data = array("vanilla", "strawberry", "mango", "peaches");
$sub_set_data = array( "strawberry", "mango");输出将是剩余的数组：array("vanilla", "peaches");
编辑：
NOT array diff it look like the minus operator 7-3 = 4 or $C = $A-$B
python概念：
>>> A = [6, 7, 8, 9, 10, 11, 12]
>>> subset_of_A = [6, 9, 12];
>>> set(A) - set(subset_of_A)
set([8, 10, 11, 7])
>>> 我能为这种情况做些什么？
回答 1
Stack Overflow用户
回答已采纳
发布于 2011-04-13 04:11:37
看起来你需要array_diff
<?php
$array1 = array("a" => "green", "red", "blue", "red");
$array2 = array("b" => "green", "yellow", "red");
$result = array_diff($array1, $array2);
print_r($result);
?>结果：
Array
(
[1] => blue
)http://www.php.net/manual/en/function.array-diff.php
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原文链接：
https://stackoverflow.com/questions/5640974
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