组合数组的PHP
我该如何组合这两个数组,并且如果数组的重复只有一个使用PHP表示。
Array
(
[0] => 18
[1] => 20
[2] => 28
[3] => 29
)
Array
(
[0] => 1
[1] => 8
[2] => 19
[3] => 22
[4] => 25
[5] => 28
[6] => 30
)
这听起来像你需要:
array_unique(array_merge($first_array, $second_array));
将array_unique应用于array_merge函数的结果。
例:
php > $f=array(1,2,3,4,5);
php > $r=array(4,5,6,7,8);
php > print_r(array_unique(array_merge($r,$f)));
Array
(
[0] => 4
[1] => 5
[2] => 6
[3] => 7
[4] => 8
[5] => 1
[6] => 2
[7] => 3
)
只需使用sum运算符来合并两个数组的值,例如:
$first = array(18, 20, 21, 28, 29);
$second = array(1, 8, 18, 19, 21, 22, 25, 28, 30); // Contains some elements of $first
$sum = $first + $second;
结果数组应包含两个数组的元素,那么可以使用array_unique $result = array_unique($sum);
。 此时,生成的数组将包含两个数组的元素,但只包含一次:
Array
(
[0] => 18
[1] => 20
[2] => 21
[3] => 28
[4] => 29
[5] => 22
[6] => 25
[7] => 28
[8] => 30
)
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