Last updated: Sat, 24 Mar 2007

fprintf

(PHP 5)

fprintf — Write a formatted string to a stream

Description

int fprintf ( resource $handle, string $format [, mixed $args [, mixed $...]] )

Write a string produced according to format to the stream resource specified by handle. format is described in the documentation for sprintf().

Returns the length of the outputted string.

See also: printf(), sprintf(), sscanf(), fscanf(), vsprintf(), and number_format().

Examples

Příklad 2086. fprintf(): zero-padded integers


<?php

if (!($fp = fopen('date.txt', 'w')))

    return;



fprintf($fp, "%04d-%02d-%02d", $year, $month, $day);

// will write the formatted ISO date to date.txt

?>

Příklad 2087. fprintf(): formatting currency


<?php

if (!($fp = fopen('currency.txt', 'w')))

    return;



$money1 = 68.75;

$money2 = 54.35;

$money = $money1 + $money2;

// echo $money will output "123.1";

$len = fprintf($fp, '%01.2f', $money);

// will write "123.10" to currency.txt



echo "wrote $len bytes to currency.txt";

// use the return value of fprintf to determine how many bytes we wrote

?>

add a note User Contributed Notes
fprintf

jgbreezer at hotmail dot com
07-Sep-2006 04:14


Another alternative using sprintf and fwrite() for pre-v5 php's:



fwrite( resource, sprintf(format [, mixed args [, mixed ...]] ))



Barring slight logical differences in meaning of returned value and (maybe??) how it handles magic_quotes_runtime config option, see fwrite() help.

aidan at php dot net
30-May-2004 07:35


This functionality is now implemented in the PEAR package PHP_Compat.



More information about using this function without upgrading your version of PHP can be found on the below link:



http://pear.php.net/package/PHP_Compat

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Last updated: Sat, 24 Mar 2007