PHP sprintf Definition and Usage _php tutorial

The sprintf () function is used to write a formatted string into a variable.

Definition and usage
The sprintf () function is used to write a formatted string into a variable.

Grammar
sprintf (format,arg1,arg2,arg++) parameter description
Format required. Conversion format.
Arg1 required. Specifies the parameter that is inserted into the first% symbol in the format string.
Arg2 is optional. Specifies the parameter that is inserted into the second% symbol in the format string.
arg++ is optional. Specifies the parameter that is inserted into the format string third to fourth, and so on, in the% symbol.

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:

%%-return percent 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 decimal digits (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

Hints and Notes
Note: If the% symbol is more than the arg parameter, you must use a placeholder. The placeholder is inserted after the% symbol and consists of a number and a "$". See Example 3.

Example
Example 1

The code is as follows	Copy Code
?

Output:

? Hello World. Day Number 123
Example 2

The code is as follows	Copy Code
?

　　

Output:

? 123.000000
Example 3

The code is as follows	Copy Code
? with no decimals:%1$u ", $number); echo $txt;?>

Output:

? With 2 decimals:123.00 with no decimals:123
Example 4

The code is as follows	Copy Code
? Output: ? application/pdf

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