php filesize 函数
filesize
( PHP 4中, PHP 5中)
filesize-获取文件大小
描述
国际filesize(字符串$文件名)
获得大小给定的文件。
参数
文件名
文件路径。
返回值
回报文件的大小以字节为单位,或FALSE (和产生错误的水平E_WARNING )情况下的一个错误。
注意:由于PHP的整数类型的签署和许多平台使用32位整数,filesize( )可能会返回意想不到的结果的文件的容量大于2GB 。对于文件的2GB和4GB的大小这通常可以克服使用sprintf ( “ % U ”型,filesize( $档案) ) 。
实例
例如# 1filesize( )的例子
// outputs e.g. somefile.txt: 1024 bytes
$filename = 'somefile.txt';
echo $filename . ': ' . filesize($filename) . ' bytes';
?>

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