in_array多个值 [英] in_array multiple values

问题描述

我如何检查多个值，如：

How do I check for multiple values, such as:

$arg = array('foo','bar');

if(in_array('foo','bar',$arg))

这是一个例子让您了解好一点，我知道这是行不通的。

That's an example so you understand a bit better, I know it won't work.

推荐答案

相交草堆目标，并确保交集precisely等于目标：

Intersect the targets with the haystack and make sure the intersection is precisely equal to the targets:

$haystack = array(...);

$target = array('foo', 'bar');

if(count(array_intersect($haystack, $target)) == count($target)){
    // all of $target is in $haystack
}

请注意，您只需要验证所得的交集的尺寸大小相同的目标值数组说 $大海捞针是<$的一个超集C $ C> $目标。

Note that you only need to verify the size of the resulting intersection is the same size as the array of target values to say that $haystack is a superset of $target.

要验证 $大海捞针在 $目标也至少有一个值，你可以这样做检查

To verify that at least one value in $target is also in $haystack, you can do this check:

 if(count(array_intersect($haystack, $target)) > 0){
     // at least one of $target is in $haystack
 }

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