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(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
<?php if (!($fp = fopen('date.txt', 'w'))) { return; } fprintf($fp, "%04d-%02d-%02d", $year, $month, $day); // will write the formatted ISO date to date.txt ?>
Example #2 fprintf(): formatting currency
<?php if (!($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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