重置 PHP 数组索引

Reset PHP Array Index

提问by Walter Johnson

I have a PHP array that looks like this:

我有一个看起来像这样的 PHP 数组：

[3] => Hello
[7] => Moo
[45] => America

What PHP function makes this?

什么 PHP 函数使这个？

[0] => Hello
[1] => Moo
[2] => America

回答by Facebook Staff are Complicit

The array_values()function ^[docs]does that:

的array_values()函数^[文档]做的是：

$a = array(
    3 => "Hello",
    7 => "Moo",
    45 => "America"
);
$b = array_values($a);
print_r($b);

Array
(
    [0] => Hello
    [1] => Moo
    [2] => America
)

回答by Allan Mwesigwa

If you want to reset the key countof the array for some reason;

如果由于某种原因要重置数组的键计数；

$array1 = [
  [3]  => 'Hello',
  [7]  => 'Moo',
  [45] => 'America'
];
$array1 = array_merge($array1);
print_r($array1);

Output:

输出：

Array(
  [0] => 'Hello',
  [1] => 'Moo',
  [2] => 'America'
)

回答by Gufran Hasan

Use array_keys()function get keys of an array and array_values()function to get values of an array.

使用array_keys()函数获取数组的键和array_values()函数获取数组的值。

You want to get values of an array:

您想获取数组的值：

$array = array( 3 => "Hello", 7 => "Moo", 45 => "America" );

$arrayValues = array_values($array);// returns all values with indexes
echo '<pre>';
print_r($arrayValues);
echo '</pre>';

Output:

输出：

Array
(
    [0] => Hello
    [1] => Moo
    [2] => America
)

You want to get keys of an array:

您想获取数组的键：

$arrayKeys = array_keys($array);// returns all keys with indexes
    echo '<pre>';
    print_r($arrayKeys);
    echo '</pre>';

Output:

输出：

Array
(
    [0] => 3
    [1] => 7
    [2] => 45
)