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php fflush 函数

Jun 13, 2016 am 11:17 AM
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php fflush 函数  

fflush
( PHP 4中“ = 4.0.1 , PHP 5中)

fflush -刷新输出到一个文件

描述
布尔fflush (资源$处理)
此功能部队写入所有缓冲输出的资源所指向的文件句柄。

参数

把柄
文件指针必须有效,必须指向一个文件成功打开fopen ( )或者fsockopen ( ) (和尚未关闭fclose ( ) ) 。


返回值
返回TRUE或FALSE的成功失败。

实例

例如1号文件的写例如使用fflush ( )、

$filename = 'bar.txt';

$file = fopen($filename, 'r+');
rewind($file);
fwrite($file, 'Foo');
fflush($file);
ftruncate($file, ftell($file));
fclose($file);
?>


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