从PHP数组中的键中获取价值

Question

I have the following array in PHP:

Array
(
    [0] => Array
        (
            [name] => category
            [value] => OUT
        )
    [1] => Array
        (
            [name] => Name_Fr
            [value] => p
        )
...

How can I get the value if I know the name ?

I tried:

$value = $array['name']['Name_Fr'];

Thanks.

Answer 1

您将必须遍历所有索引，以找到名称匹配的地方。

Answer 2

If you're running PHP 5.5, you can do a lot with array_column() , such as:

$newArray = array_column($oldArray, 'value', 'name');
$value = $newArray[$knownName];

or even (using array dereferencing):

$value = array_column($oldArray, 'value', 'name')[$knownName];

For earlier versions of PHP, you could do something like:

$value = array_filter(
    $oldArray, 
    function ($value) use ($knownName) { 
        return $value['name'] == $knownName; 
    }
);
$value = array_shift($value);
echo $value['value'], PHP_EOL;

Answer 3

since it's an array of arrays, a loop would help you do so.

foreach($arrays as $array)
{
  $value = $array[value]
}