如何阻止PHP舍入我的条形码数字

Question

I have some bar code numbers in an array. PHP seems to be rounding the barcodes which start with leading zeros. How do I stop this happening and keep the numbers as they were? Code I am using is below:

$array = array(5032227448124,5060028999989,5010121096504,5060028999996,5016254104864,5016402052788,8422248036986,0000003798720,0000003735503,0000003798713);

echo '<pre>';
print_r($array);
echo '</pre>';

This echos the following, as you can see the last four bar codes which feature leading zeros have been changed and had their leading zeros removed. These numbers are always 13 digits long and are padded with zeros.

Array
(
    [0] => 5032227448124
    [1] => 5060028999989
    [2] => 5010121096504
    [3] => 5060028999996
    [4] => 5016254104864
    [5] => 5016402052788
    [6] => 8422248036986
    [7] => 31
    [8] => 1030979
    [9] => 31
    [10] => 1031004
)

Answer 1

如果它们不是数字（整数，浮点数，指数），则需要将它们作为字符串引用。

Answer 2

1. The obvious, easy, and also likely wrong answer is to make them strings.

2. The better answer is to use printf() / sprintf() to pad with zeroes:

    printf('%013d', 12345); // output: 0000000012345 

3. MySQL also has a handy LPAD() function:

    SELECT LPAD(12345, 13, 0) // output 0000000012345 

Answer 3

这是将值转换为填充字符串的简单方法：

$array = array_map(function ($e){return str_pad($e, 13, "0", STR_PAD_LEFT);}, $array);

Answer 4

最后，我只需要在每个条形码编号周围加上双引号，例如

 $array = array("5032227448124","5060028999989","5010121096504","5060028999996","5016254104864","5016402052788","8422248036986","0000003798720","0000003735503","0000003798713");