PHP中的数组（数据结构）

来源：互联网发布：java objectmapper 编辑：程序博客网时间：2024/05/18 01:12

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

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