How to convert php to 6 decimal places
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Conversion methods: 1, the use of "round (value, 6)" logarithm rounding conversion to 6 decimal places; 2, the use of "sprintf (% .6f", value) "format value into 6 decimal places; 3, the use of" number_format (value, 6) "thousand-place grouping format value into 6 decimal places.
This article operating environment: Windows10 system, PHP7.1 version, Dell G3 computer.
How to convert php to 6 decimal places
1. Use the round () function.
The round () function rounds floating-point numbers.
Grammar
Round (number,precision,mode)
Number is required. Specifies the value to round.
Precision is optional. Specify the Mantissa after the decimal point. The default is 0, or it can be negative.
Mode is optional. Specifies the constant that represents the rounding mode:
2. Use the sprintf () function.
The sprintf () function writes the formatted string to a variable.
The arg1, arg2, + + parameters are inserted at the percent sign (%) symbol in the main string. This function is executed step by step. At the first% symbol, insert arg1, at the second% symbol, insert arg2, and so on.
Grammar
Sprintf (format,arg1,arg2,arg++)
Format is required. Specifies the string and how to format the variables in it.
3. Use the number_format () function.
The number_format () function formats numbers by grouping thousands of bits.
This function supports one, two, or four parameters (not three).
Grammar
Number_format (number,decimals,decimalpoint,separator)
Examples are as follows
Output result:
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