查找两个平面数组的值交集
我希望帮助完成我的函数，该函数比较两个数组并返回两个数组中相同的元素的值。
$array1 = array("bob", "mike", "david", "gary");
$array2 = array("susan", "jenny", "mike");
这两个数组每次都会有不同数量的元素。我运行下面的函数，它说有匹配项，但不会告诉我哪些匹配项。如果数组没有相同数量的元素，我的函数也能工作吗？
echo find_matches($array1, $array2);
function find_matches($mac1, $mac2) {
$matches = array();
foreach ($mac1 as $mac) {
if (in_array($mac, $mac2)) {
$matches[] = $mac;
}
}
if ($matches != 0) {
$error_message = "The following numbers match: " . implode(' ', $matches);
return $error_message;
} else {
return true;
}
}
I would like help finishing my function that compares two arrays and returns the values of the element that are the same in both.
$array1 = array("bob", "mike", "david", "gary");
$array2 = array("susan", "jenny", "mike");
The two arrays will have different amounts of elements every time. I run the function below and it says there are matches but wont tell me which ones. Also will my function work if the array does not have the same amount of elements?
echo find_matches($array1, $array2);
function find_matches($mac1, $mac2) {
$matches = array();
foreach ($mac1 as $mac) {
if (in_array($mac, $mac2)) {
$matches[] = $mac;
}
}
if ($matches != 0) {
$error_message = "The following numbers match: " . implode(' ', $matches);
return $error_message;
} else {
return true;
}
}
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如果您希望返回匹配项的数量和匹配项本身，您可以使用
array_intersect：If you're looking to return the number of matches and the matches themselves, you could use
array_intersect: