PHP数组中的解析错误

Question

    $labels = (
        'steam' => 'Steam',
        'bore_water' => 'Bore Water',
        'boiler1oil' => 'Boiler 1 Oil',
    );

  

解析错误：语法错误，第32行意外T_DOUBLE_ARROW：'steam' => 'Steam',

有人能发现这个问题吗？

Answer 1

$labels = array(
    'steam' => 'Steam',
    'bore_water' => 'Bore Water',
    'boiler1oil' => 'Boiler 1 Oil',
);

Answer 2

您遗失array：

$labels = array(
    'steam' => 'Steam',
    'bore_water' => 'Bore Water',
    'boiler1oil' => 'Boiler 1 Oil',
);