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php filesize 函数

Jun 13, 2016 am 11:17 AM
filesizephpfunctionsizedocumentObtain

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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