How to get multiple values with same key from an array PHP

PHP Snippet 1:

$pricelist = [
        "w70" => [573, 706, 895, 49, 270, 334, 65],
        "w80" => [649, 801, 1017, 55, 307, 372, 65],
        "w100" => [801, 990, 1260, 69, 384, 449, 76],
        "w120" => [909, 1136, 1460, 81, 461, 525, 86],
    ];

PHP Snippet 2:

$pricelist['w70'];