下面是一个专门讲述feof 教程,有实现等。
下面是一个专门讲述feof 教程,有实现等。
feof
( PHP 4中, PHP 5中)
feof -测试文件结束的文件指针
描述
布尔feof (资源$处理)
试验结束时的档案文件指针。
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 ,如果文件指针是EOF分析或发生错误(包括套接字超时) ,否则返回FALSE 。
注
警告
如果一个连接开幕fsockopen ( )不关闭服务器, feof ( )将等到超时已达到返回值TRUE 。默认的超时值为60秒。您可以使用stream_set_timeout ( )来改变这个值。
警告
如果通过文件指针是无效的,您会得到一个无限循环,因为feof ( )没有返回值TRUE 。
看看实例:
// if file can not be read or doesn't exist fopen function returns FALSE
$file = @fopen("no_such_file", "r");
// FALSE from fopen will issue warning and result in infinite loop here
while (!feof($file)) {
}
fclose($file);
?>

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