Numeric format without rounding

[WEXBO]

How to format numeric float values with automatic number of decimal places (without rounding).

I need column values "1", "1,2", "1,23", "1,234", "1,2345".
Not rounding values "1,00", "1,20", "1,23", "1,23", "1,24".

$sheet1header` = [
    'not-work-integer'=>'integer',
    'not-work-custom-integer'=>'0',
    'not-work-custom-1decimal'=>'0.0',
    'not-work-custom-2decimal'=>'0.00',
    'draft-float'=>'float',
];

[sayid]

您好，我已经收到您的信件，将尽快回复您。