Last updated: Fri, 18 Jul 2008

fprintf

(PHP 5)

fprintf — Scrive una stringa formattata in uno stream

Descrizione

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

La funzione scrive una stringa formattata in base al parametro format nello stream indicato dal parametro handle . I valori per il parametro format sono descritti nella documentazione della funzione sprintf().

Restituisce la lunghezza della stringa prodotta.

Vedere anche: printf(), sprintf(), sscanf(), fscanf(), vsprintf() e number_format().

Esempi

Example #1 fprintf(): interi completati con zero


<?php
if (!($fp = fopen('date.txt', 'w')))
    return;
 
fprintf($fp, "%04d-%02d-%02d", $year, $month, $day);
// Scrive la data in formato ISO nel file date.txt
?>

Example #2 fprintf(): formattazione della moneta


<?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);
// scrive "123.10" nel file currency.txt
 
echo "wrote $len bytes to currency.txt";
// utilizza il valore restituito da fprintf per stabilire quanti byte sono stati scritti
?>

add a note User Contributed Notes
fprintf

jgbreezer at hotmail dot com
07-Sep-2006 05:14


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 08:35


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: Fri, 18 Jul 2008