PHP vsprintf() Function

20 June 2025

0

The vsprintf() function in PHP is an inbuilt function and used to display array values as a formatted string. The array elements will be inserted at the percent (%) signs in the main string. Display array values as a formatted string according to its format and accepts an array argument in place of variable number of arguments. The function returns formatted string. while vprintf() outputs a formatted string
Syntax:

 vsprintf (format, arr_arguments)

Parameters Used : This Function takes Two parameter which are described below-

format: It has Required parameter. It Specifies how string formatted to be variables. Possible format values as below:
- %% – Returns a percent sign
- %b – Binary number
- %d – Signed decimal number (negative, zero or positive)
- %u – Unsigned decimal number (equal to or greater than zero)
- %x – Hexadecimal number (lowercase letters)
- %X – Hexadecimal number (uppercase letters)
- %f – Floating-point number (local settings aware)
- %F – Floating-point number (not local settings aware)
- %o – Octal number
- %c – The character according to the ASCII value
- %s – String
- %e – Scientific notation using a lowercase (e.g. 1.2e+2)
- %g – shorter of %e and %f
- %G – shorter of %E and %f
- %E – Scientific notation using a uppercase (e.g. 1.2E+2)
arr_arguments: An array arguments inserted at the % signs formatted string.

Additional format:

– -> Left-justifies for variable value .
[0-9] -> maximum string length for number.
[0-9] -> minimum string width for variable value.
+ -> Used for both[+ or-] (By default its negative number).

Program 1: String space specified program.

php

<?php 
$str1 = "Geeks"; 
$str2 = "Geeksforneveropenarticle"; 
  
// print string-1 only  
echo vsprintf("%s\n", array( 
    $str1
)); 
  
// print string-15 space 
echo vsprintf("%15s\n", array( 
    $str1
)); 
  
// print string-1 with space 
echo vsprintf("%-25s\n", array( 
    $str1
)); 
  
// print string with zero 
echo vsprintf("%020s\n", array( 
    $str1
)); 
  
// print string with * symbol 
echo vsprintf("%'*10s\n", array( 
    $str1
)); 
  
// print string-2  
echo vsprintf("%s\n", array( 
    $str2
)); 
  
// print string-2 with decimal point 
echo vsprintf("%2.10s\n", array( 
    $str2
)); 
  
// print string-2 with space 
echo vsprintf("%30s\n", array( 
    $str2
)); 
  
// print string-2 with zero 
echo vsprintf("%030s", array( 
    $str2
)); 
  
  
?> 

Output:

Geeks
          Geeks
Geeks                    
000000000000000Geeks
*****Geeks
Geeksforneveropenarticle
Geeksforge
          Geeksforneveropenarticle
0000000000Geeksforneveropenarticle

Program 2: Drive floating program %f and %F in vsprintf() function in PHP.

php

<?php 
  
// %f and %F floating number in  
// vsprintf function in php 
$value1 = 789495321; 
$value2 = 8080907021; 
$value3 = 334422190; 
  
  
echo "\n%f (local) Floating: "; 
  
// for %f Floating-point number 
// for local settings aware 
  
$txt = vsprintf("%f %f %f", array( 
    $value1, 
    $value2, 
    $value3
)); 
echo $txt; 
  
echo "\n%F (Not local) Floating: "; 
// for %F Floating-point number 
// for local settings aware 
  
$result = vsprintf("%F %F %F ", array( 
    $value1, 
    $value2, 
    $value3
)); 
  
echo $result; 
?> 

Output:

%f (local) Floating: 789495321.000000 8080907021.000000 334422190.000000
%F (Not local) Floating: 789495321.000000 8080907021.000000 334422190.000000

Program 3: Implement %d, %u, %e and %E in vsprintf() function.

php

<?php 
  
// vsprintf function in php 
// used %d, %u, %e, %E  
$value1 = 7894; 
$value2 = 9070; 
$value3 = 3344; 
  
echo "%d Signed decimal number : "; 
// %d Signed decimal number 
// where (-, + or zero) 
$txt = vsprintf("%d %d %d", array( 
    $value1, 
    $value2, 
    $value3
)); 
echo $txt; 
  
echo "\n%u UnSigned decimal number : "; 
// %d UnSigned decimal number 
// where (0<=zero) 
  
$tt = vsprintf("%u %u %u", array( 
    $value1, 
    $value2, 
    $value3
)); 
echo $tt; 
  
echo "\n%e Scientific notation : "; 
// Scientific notation for lowercase  
$result = vsprintf("%e %e %e ", array( 
    $value1, 
    $value2, 
    $value3
)); 
echo $result; 
  
echo "\n%E Scientific notation : "; 
// Scientific notation for uppercase  
$result = vsprintf("%E %E %E ", array( 
    $value1, 
    $value2, 
    $value3
)); 
echo $result; 
  
?> 

Output:

%d Signed decimal number : 7894 9070 3344
%u UnSigned decimal number : 7894 9070 3344
%e Scientific notation : 7.894000e+3 9.070000e+3 3.344000e+3 
%E Scientific notation : 7.894000E+3 9.070000E+3 3.344000E+3

Program 4: Implement %%, %b, %o, %x, and %Xin vsprintf() function in PHP.

php

<?php 
  
// vsprintf function in php 
// used %%, %b, %o, %x, %X  
$value1 = 789495; 
$value2 = 334455; 
  
  
// Returns [%] sign 
echo "% ->Returns [%] sign: "; 
$txt = vsprintf("%% %%", array( 
    $value1, 
    $value2
)); 
echo $txt; 
  
// Returns [%b] binary number  
echo "\n%b ->binary number : "; 
  
$tt = vsprintf("%b %b", array( 
    $value1, 
    $value2
)); 
echo $tt; 
  
// Returns [%o] octal number  
echo "\n%o ->octal number : "; 
$result = vsprintf("%o %o ", array( 
    $value1, 
    $value2
)); 
echo $result; 
  
// Returns [%x] Hexadecimal number[lowercase] 
echo "\n%x ->Hexadecimal number Lc : "; 
$result = vsprintf("%x %x", array( 
    $value1, 
    $value2
)); 
echo $result; 
  
// Returns [%X] Hexadecimal number[Uppercase] 
echo "\n%X ->Hexadecimal number Uc : "; 
$result = vsprintf("%X %X", array( 
    $value1, 
    $value2
)); 
echo $result; 
  
?> 

Output:

% ->Returns [%] sign: % %
%b ->binary number : 11000000101111110111 1010001101001110111
%o ->octal number : 3005767 1215167 
%x ->Hexadecimal number Lc : c0bf7 51a77
%X ->Hexadecimal number Uc : C0BF7 51A77

Program 5:Implement %g %G and %c(ASCII) vsprintf() function in PHP.

php

<?php 
  
// vsprintf function in php 
  
$value1 = 75; 
$value2 = 55; 
$char   = 97; 
$char2  = 69; 
  
// shorter of %e and %f 
echo "%g shorter of %e and %f: "; 
$txt = vsprintf("%g %g", array( 
    $value1, 
    $value2
)); 
echo $txt; 
  
// %G – shorter of %E and %f  
echo "\n%G shorter of %E and %f : "; 
  
$tt = vsprintf("%G %G", array( 
    $value1, 
    $value2
)); 
echo $tt; 
  
// ASCII value 
echo "\n%c ASCII value : "; 
$result = vsprintf("%c %c ", array( 
    $char, 
    $char2
)); 
echo $result; 
  
?> 

Output:

%g shorter of %e and %f: 75 55
%G shorter of %E and %f : 75 55
%c ASCII value : a E

Related Article: PHP | vprintf() function
References: http://php.net/manual/en/function.vsprintf.php

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