数组删除第一个元素并在末尾添加一个新元素

问题描述：

If I had the following array:

Array(
    [0] => 30
    [1] => 60
    [2] => 2
    [3] => 55
    [4] => 1
    [5] => 20
    [6] => 1
    [7] => 8
    [8] => 38
    [9] => 58
    [10] => 12
)

How would I delete the first element and then add a new element to the end. So the new array would look like this:

Array(
    [0] => 60
    [1] => 2
    [2] => 55
    [3] => 1
    [4] => 20
    [5] => 1
    [6] => 8
    [7] => 38
    [8] => 58
    [9] => 12
    [9] => 10
)

I could use array_push to add to the end but then how would I delete the first element and reposition the keys?

答

array_shift will remove the first element, and shift all the keys "up" one.

$array = ('0' => '30', '1' => '20', '2' => '5');
$array = array_shift($array, '19');
$var_dump ($array); // gives 0 => 20, 1 => 5, 2 => 19

答

You should use array_shift to remove/re-index your array by assigning your current array to a variable and perform:

array_shift($Array);

Then to add a new value to the Array

$Array[] = "Toadd";

You will then beable to add another number/string to your array.

数组删除第一个元素并在末尾添加一个新元素

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