将数组从已知项分割为两个数组

I have an array like this

我有一个这样的数组

$a=["apple","ball","cat","dog","elephant","fish"]

I want to make a two new array like this from array $a . I want the things before dog stay in $b and i want items dog elephants and fish in another array $c

我想从数组$a中创建一个这样的两个新数组。在买狗之前，我想买b美元的东西，我想买狗狗狗，大象和鱼的东西

$b=["apple","ball","cat"]

$c=["dog","elephant","fish"]

I want to do this by using word "dog" not using value 4 . Is it possible ? I searched many array function but my brain stopped working . So can some one help me ?

我想通过使用单词“dog”来实现这一点，而不是使用值4。是可能的吗?我搜索了很多数组函数，但我的大脑停止工作了。那么有人能帮我吗?

2 个解决方案

#1

If you are okay with array_search function then it's simple. See the following approaches:

如果您对array_search函数没有问题，那么它很简单。看到下面的方法:

$arr   = array("apple","ball","cat", "deer", "frog",  "dog","elephant","fish");
$res   = array_chunk($arr, array_search('dog', $arr));
$first = $res[0]; $last  = $res[1];
print_r($first);
print_r($last);


$last = array_splice($arr, array_search('dog', $arr));
print_r($arr);
print_r($last);

#2

You can use the functions array_search, array_splice, and array_reverse to accomplish this:

您可以使用函数array_search、array_splice和array_reverse来完成以下任务:

$a = array("apple","ball","cat","dog","elephant","fish");

$lastItems = array_slice( $a, array_search( 'dog', $a ) );
$firstItems = array_reverse( array_slice( array_reverse( $a ), array_search( 'dog', $a ) ) );

There may yet be a simpler approach. But using the array_reverse method to reverse the array will help you get the elements sliced before the array_search element without using inverse directional slicing.

也许还有一种更简单的方法。但是使用array_reverse方法反转数组将帮助您在array_search元素之前将元素切片，而不需要使用反向定向切片。

Also note that I changed your array initialization.

还要注意，我更改了数组初始化。

#1