fprintf() function in PHP

PHPProgrammingServer Side Programming

The fprintf() function is used to write a formatted string to a stream

Syntax

fprintf (stream, format, argument1, argument2, ... )

Parameters

  • stream − Where to write/output the string

  • format − Specifies the string and how to format the variables in it.

  • The following are the possible format values −

    • %%  − 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)

  • argument1 − The argument to be inserted at the first %-sign in the format string.

  • argument2 − The argument to be inserted at the second %-sign in the format string.

Return

The fprintf() function returns the length of the string written.

Example

The following is an example −

 Live Demo

<?php
$input = 123; $file = fopen("sample.txt","r");
fprintf($file,"%f",$input);
?>

Output

123.000000
raja
Published on 16-Oct-2018 14:14:40

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