PHP printf() Function

PHP printf() Function

The printf() function in PHP outputs a formatted string.

The related functions of printf() function are as follows:

sprintf()
vprintf()
vsprintf()
fprintf()
vfprintf()

Syntax

printf ( string $format [, mixed $... ] )

Parameter

format(required)- This parameter formats the string which is composed of zero or more directives where the ordinary characters (excluding %) that are copied directly to the result and conversion specifications.

The possible format values are as follows:

%% - Returns a percent sign
%b - Binary number
%c - The character according to the ASCII value
%d - Signed decimal number (negative, zero or positive)
%e - Scientific notation using a lowercase (e.g. 1.2e+2)
%E - Scientific notation using a uppercase (e.g. 1.2E+2)
%u - Unsigned decimal number (equal to or greather than zero)
%f - Floating-point number (local settings aware)
%F - Floating-point number (not local settings aware)
%g - shorter of %e and %f
%G - shorter of %E and %f
%o - Octal number
%s - String
%x - Hexadecimal number (lowercase letters)
%X - Hexadecimal number (uppercase letters)

Return

This function returns the length of the outputted string.

Example 1

Output

123423.000000

Example 2

Output

The binary value for 123456789 is: 111010110111100110100010101
The ASCII character value for 50 is:  2
The signed decimal value for -123456789 is:  123456789

Example 3

Output

The octal value for 92345678 is: 540212516
The string value for 92345678 is:  92345678
The hexadecimal number in lowercase for -92345678 is:  fffffffffa7eeab2
The hexadecimal number in uppercase for -92345678 is:  FFFFFFFFFA7EEAB2

Example 4

Output

Hello PHP world
Hello PHP world
Hello PHP world
Hello PHP world
Hello PHP world
Hello PH

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