PHP5中文手册·Write a formatted string to a stream -- 追寻梦想＞编程乐园＞PHP 编程

说明

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

Write a string produced according to format to the stream resource specified by handle .

参数

handle
format: See sprintf() for a description of format .
args
...

返回值

Returns the length of the outputted string.

范例

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
?>


	PHP5中文手册 explode get_html_translation_table Strings PHP Manual fprintf (PHP 5) fprintf — Write a formatted string to a stream 说明 int fprintf ( resource `$handle` , string `$format` [, mixed `$args` [, mixed `$...` ]] ) Write a string produced according to `format` to the stream resource specified by `handle` . 参数 `handle` `format` See sprintf() for a description of `format` . `args` `...` 返回值 Returns the length of the outputted string. 范例 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 ?>` 参见 printf() sprintf() sscanf() fscanf() vsprintf() number_format() explode get_html_translation_table Strings PHP Manual

fprintf

说明

参数

返回值

范例

参见