array_pop
将数组最后一个单元弹出(出栈)
$arr = [11=>11,22=>22,33=>33,44=>44];
print_r($arr);
array_pop($arr);
print_r($arr);
Array
(
[11] => 11
[22] => 22
[33] => 33
[44] => 44
)
Array
(
[11] => 11
[22] => 22
[33] => 33
)
array_push
将一个或多个单元压入数组的末尾(入栈)
$arr = [11=>11,22=>22,33=>33,44=>44];
print_r($arr);
array_push($arr,55);
print_r($arr);
Array
(
[11] => 11
[22] => 22
[33] => 33
[44] => 44
)
Array
(
[11] => 11
[22] => 22
[33] => 33
[44] => 44
[45] => 55
)
array_shift
将数组开头的单元移出数组
$arr = [11=>11,22=>22,33=>33,44=>44];
print_r($arr);
array_shift($arr);
print_r($arr);
Array
(
[0] => 22
[1] => 33
[2] => 44
)
array_unshift
在数组开头插入一个或多个单元
$arr = [11=>11,22=>22,33=>33,44=>44];
print_r($arr);
array_unshift($arr, 55);
print_r($arr);
Array
(
[11] => 11
[22] => 22
[33] => 33
[44] => 44
)
参考
- PHP手册