PHP vprintf

Education is not limited to just classrooms. It can be gained anytime, anywhere... - Ravi Ranjan (M.Tech-NIT)

PHP : vprintf() function

Description

The vprintf() function is used to display array values as a formatted string.

Note. The function works as a printf() function but accepts an array as arguments.

Version

(PHP 4 and above)

Syntax

vprintf (format, array_args)

Parameters

Name

Description

Required /
Optional

Type

format

Each conversion specification starts with a single percent sign (%) and ends with the following conversion characters. 
% - returns a percent sign.
b - the argument is treated as an integer and display it as a binary number. 
c - the argument is treated as an integer and display it as a an ASCII value. 
d - the argument is treated as an integer and display as a signed decimal number. 
e - the argument is treated as scientific notation (e.g. 1.2e+2).
E - the argument treated as scientific notation (e.g.1.2E+2).
u - the argument is treated as an integer, and display as an unsigned decimal number. 
f- the argument is treated as a float, and display as a floating-point number. (local aware)
F - the argument is treated as a float, and display as a floating-point number (non-locale aware).
g - shorter of %e and %f. 
G - shorter of %E and %f. 
o- the argument is treated as an integer, and display as an octal number.
s - the argument is treated as string and display as a string.
x - the argument is treated as an integer and display as a hexadecimal number (with lowercase letters). 
X - the argument is treated as an integer and display as a hexadecimal number (with uppercase letters). 

Optional specification : 
Sign specifier : display a sign (+ or -) in front a number. By default, a - sign is used in front of a number if it is negative. 

Padding character : 
Default character is space. An alternate padding character can be specified by prefixing it with a single quote.
Alignment specifier. : - character makes the alignment left-justified. The default is right justified. 
Width specifier : An integer number specifies the width of the field. 
Precision specifier : The argument specifies how many decimal number should be displayed for floating numbers. When using this specifier on a string, it acts as a cutoff point, setting a maximum character limit to the string.

Required

String

array_args

An array with an argument to be added as the first %-sign in the formatted string.

Required

Array

 

Return value

Returns the length of the outputted string.

Value Type : Integer.

Pictorial Presentation

string_vprintf

Example :

  1. $string1 = 'My Roll No. is :';  

  2. $roll_no = 22;  

  3. vprintf('%s   %u', array($string1, $roll_no));  

  4. ?>  

Output :

My Roll No. is : 22