php function sprintf. vsprintf (Placeholder)

Source: Internet
Author: User

The sprintf () format string is written to a variable.

vsprintf () format the string in some of the write variables.

<?PHP$NUM1 = 123; $num 2 = 456; $txt = vsprintf ("%f%f", Array ($num 1, $num 2)); Echo $txt;? > Output: 123.000000456.000000

  

Grammar
    1. 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 arg2at 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.

Tip: Related functions: fprintf (), printf (), vfprintf (), vprintf (), and vsprintf ().

php function sprintf. vsprintf (Placeholder)

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