(PHP 5)
fprintf — Write a formatted string to a stream
Write a string produced according to format to the stream resource specified by handle .
A file system pointer resource that is typically created using fopen().
See sprintf() for a description of format .
Returns the length of the string written.
Example #1 fprintf(): zero-padded integers
<?phpif (!($fp = fopen('date.txt', 'w'))) { return;}fprintf($fp, "%04d-%02d-%02d", $year, $month, $day);// will write the formatted ISO date to date.txt?>
Example #2 fprintf(): formatting currency
<?phpif (!($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.txtecho "wrote $len bytes to currency.txt";// use the return value of fprintf to determine how many bytes we wrote?>
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