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# vfprintf

(PHP 5)

vfprintf -- Write a formatted string to a stream

## Description

int vfprintf ( resource handle, string format, array args )

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

Operates as fprintf() but accepts an array of arguments, rather than a variable number of arguments.

Returns the length of the outputted string.

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

## Examples

例子 1. vfprintf(): zero-padded integers

`<?php if (!($fp = fopen('date.txt', 'w'))) return; vfprintf($fp, "%04d-%02d-%02d", array($year, $month, $day)); // will write the formatted ISO date to date.txt ?>`

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