how is the ceiling and floor valued?
PHP function
ceil("9.0000000000000001")9
ceil("9.000000000000001")10
floor("-9.0000000000000001")-9
floor("-9.000000000000001")-10Why is this happening? Does it matter how many places after the decimal point?
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stateful fields are often saved in the database, which are represented by numbers: 0-> fail reject 1-> success pass and so on, I want to convert 0 or 1 into Chinese characters in the obtained results, is there any good way to quickly complete t...