PHP sprintf () function use case parsing _php tutorial

Copy CodeThe code is as follows:
sprintf () function, return value to formatted string
String sprintf (String $format [, Mixed $args [, mixed $ ...])

$y = 11;
$m = 3;
$d = 9;
$date = Sprinf ('%04d-%02d-%02d ', $y, $m, $d);
Echo $date; 0011-0
printf () function, return value is formatted string length
int printf (string $format [, Mixed $args [, mixed $ ...])
$num = 3.14;
printf ("Character padding% ' #6.2s", $num); # #3.14
The character length is 6, there are several points after 2, less than 6 bits, #填充

sprintf () differs from printf ()
Syntax format, just the return value is different


Definition and usage
The sprintf () function writes a formatted string to a variable.

Grammar
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.

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.
Example
Example 1
Copy CodeThe code is as follows:
$str = "Hello";
$number = 123;
$txt = sprintf ("%s World". Day number%u ", $STR, $number);
Echo $txt;
?>

Output:

Hello World. Day Number 123
Example 2
Copy CodeThe code is as follows:
$number = 123;
$txt = sprintf ("%f", $number);
Echo $txt;
?>

Output:

123.000000
Example 3
Copy CodeThe code is as follows:
$number = 123;
$txt = sprintf ("With 2 decimals:%1\$.2f
With no decimals:%1\ $u ", $number);
Echo $txt;
?>

Output:

With 2 decimals:123.00
With no decimals:123
For more details, refer to Http://www.jb51.net/w3school/php/func_string_sprintf.htm

http://www.bkjia.com/PHPjc/323317.html www.bkjia.com true http://www.bkjia.com/PHPjc/323317.html techarticle Copy the code as follows:? PHP//sprintf () function, the returned value is the formatted string sprintf (string $format [, Mixed $args [, mixed $ ...]] $y = 11; $m = 3; $d = 9; ..

