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fprintffprintf (PHP 5) fprintf -- Write a formatted string to a stream Descriptionint 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
Example 1. fprintf(): zero-padded integers
<?php
if (!($fp = fopen('date.txt', 'w')))
return;
fprintf($fp, "%04d-%02d-%02d", $year, $month, $day);
// will write the formatted ISO date to date.txt
?>
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Example 2. fprintf(): formatting currency
<?php
if (!($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
?>
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