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Last updated: Mon, 26 Nov 2007

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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
?>



get_html_translation_table> <explode
Last updated: Mon, 26 Nov 2007
 
add a note add a note User Contributed Notes
fprintf
phyrox at hotmail dot it
08-May-2007 06:23
PHP 4 doesn't support this function, but if you want to use fprintf function or if you have a script wrote for php 5 you can use this function:
<?php
if ( !function_exists('fprintf') ) {
    function
fprintf( $file, $str ) {
       
$argn = func_num_args();
       
$i = strpos( $str, "%" ) + 2;
       
$k = 2;
        while(
$k < $argn  && $i != false ) {
           
$arg = func_get_arg( $k );
           
$str = sprintf( substr( $str , 0 , $i ) , $arg ) . substr( $str, $i );
           
$k = $k + 1;
           
$i = strpos( $str, "%" ) + 2;
        }
        if(
$file != false ) {
            return
fputs( $file, $str, strlen( $str ) );
        } else return
false;
    }
}
?>
jgbreezer at hotmail dot com
07-Sep-2006 10:14
Another alternative using sprintf and fwrite() for pre-v5 php's:

fwrite( resource, sprintf(format [, mixed args [, mixed ...]] ))

Barring slight logical differences in meaning of returned value and (maybe??) how it handles magic_quotes_runtime config option, see fwrite() help.
aidan at php dot net
31-May-2004 01:35
This functionality is now implemented in the PEAR package PHP_Compat.

More information about using this function without upgrading your version of PHP can be found on the below link:

http://pear.php.net/package/PHP_Compat

get_html_translation_table> <explode
Last updated: Mon, 26 Nov 2007
 
 
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