php检索多维数组的值

$array = array(
    array('name' => 'John', 'age' => 25),
    array('name' => 'Jane', 'age' => 30)
);

foreach ($array as $subArray) {
    echo $subArray['name']; // 输出 John 和 Jane
}

function searchValue($array, $key) {
    foreach ($array as $item) {
        if (is_array($item)) {
            $result = searchValue($item, $key);
            if ($result !== null) {
                return $result;
            }
        } elseif ($item == $key) {
            return $item;
        }
    }
    return null;
}

$array = array(
    array('name' => 'John', 'age' => 25),
    array('name' => 'Jane', 'age' => 30)
);

$value = searchValue($array, 'Jane');
echo $value; // 输出 Jane

$array = array(
    array('name' => 'John', 'age' => 25),
    array('name' => 'Jane', 'age' => 30)
);

$value = array_column($array, 'name');
print_r($value); // 输出 Array ( [0] => John [1] => Jane )