PHP Digital pre-complement 0 self-function _php tutorial

Many times we need to format the numbers, such as the number of bits in front plus 0 complement. PHP can be easily implemented, because PHP comes with functions related to functions.

sprintf () function

1. Syntax

sprintf (format,arg1,arg2,arg++)

Parameters	Description
Format	Necessary. Conversion format.
Arg1	Necessary. Specifies the parameter that is inserted into the first% symbol in the format string.
Arg2	Optional. Specifies the parameter that is inserted into the second% symbol in the format string.
arg++	Optional. Specifies the parameter that is inserted into the format string third to fourth, and so on, in the% symbol.

2. Description

The parameters format is the converted format, starting with the percent sign ("%") to the end of the converted character. The following possible format values are:

• Percent-return percentage symbol
• %b-Binary number
• %c-Characters in accordance with ASCII values
• %d-Signed decimal number
• %e-Sustainable counting method (e.g. 1.5e+3)
• %u-Unsigned decimal number
• %f-Floating point (Local settings Aware)
• %F-Floating point number (not local settings aware)
• %o-Eight binary number
• %s-String
• %x-16 binary number (lowercase letters)
• %x-16 decimal digits (uppercase letters)

Arg1, arg2, + + etc parameters will be inserted into the main string percent percent (%) Symbol. This function is executed step-by. In the first% symbol, insert arg1, insert arg2 at the second% symbol, and so on.

3. Format number Number_format ()

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