PHP fprint() Function

PHP fprint() function is used to write a formatted string to a stream. In another words we can say that this function format string to a specified output stream( file or database).

Syntax:

Parameter	Description	Required/Optional
stream	Specify string where to write /output the string	Required
Format	Specify the string.	Required
arg1	Specify the argument to be inserted at first.	required
arg2	Specify the argument to be inserted at second.	Optional
arg++	Specify the argument to be inserted at third, fourth etc.	Optional

Example 1

<?php
$number = 9;
$str = "javatpoint";
$file = fopen("test.txt","w");
echo fprintf($file,"There are %u million bicycles in %s.",$number,$str);
?>

Output:

Example 2

<?php
$num1 = 123456789;
$num2 = -123456789;
$char = 50; // The ASCII Character 50 is 2

// Note: The format value "%%" returns a percent sign
printf("%%b = %b <br>",$num1); // Binary number
printf("%%c = %c <br>",$char); // The ASCII Character
printf("%%d = %d <br>",$num1); // Signed decimal number
printf("%%d = %d <br>",$num2); // Signed decimal number
printf("%%e = %e <br>",$num1); // Scientific notation (lowercase)
printf("%%E = %E <br>",$num1); // Scientific notation (uppercase)
?>

Output:

%b = 111010110111100110100010101 
%c = 2 
%d = 123456789 
%d = -123456789 
%e = 1.234568e+8 
%E = 1.234568E+8

Example 3

<?php
$num1 = 123456789;
$num2 = -123456789;
$char = 50; // The ASCII Character 50 is 2
// Note: The format value "%%" returns a percent sign
printf("%%u = %u <br>",$num1); // Unsigned decimal number (positive)
printf("%%u = %u <br>",$num2); // Unsigned decimal number (negative)
printf("%%f = %f <br>",$num1); // Floating-point number (local settings aware)
printf("%%F = %F <br>",$num1); // Floating-point number (not local settings aware)
printf("%%g = %g <br>",$num1); // Shorter of %e and %f
printf("%%G = %G <br>",$num1); // Shorter of %E and %f
printf("%%o = %o <br>",$num1); // Octal number
?>

Output:

%u = 123456789 
%u = 4171510507 
%f = 123456789.000000 
%F = 123456789.000000 
%g = 1.23457e+8 
%G = 1.23457E+8 
%o = 726746425

Example 4

<?php
$num1 = 123456789;
$num2 = -123456789;
$char = 50; // The ASCII Character 50 is 2
printf("%%s = %s <br>",$num1); // String
printf("%%x = %x <br>",$num1); // Hexadecimal number (lowercase)
printf("%%X = %X <br>",$num1); // Hexadecimal number (uppercase)
printf("%%+d = %+d <br>",$num1); // Sign specifier (positive)
printf("%%+d = %+d <br>",$num2); // Sign specifier (negative)*/
?>

Output:

%s = 123456789 
%x = 75bcd15 
%X = 75BCD15 
%+d = +123456789 
%+d = -123456789

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