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php有关问题(急功近利)

WBOY
WBOYOriginal
2016-06-13 10:04:41951browse

php问题(急功近利)
用PHP写一个格式化显示文件大小的函数。即显示为345b,123K,78M,1.2G,这就是说,超过1K的用K为单位显示,超过1M的以M为单位显示。

------解决方案--------------------

PHP code
<?php function getFileSize($file_name){        $K = 1024;        $M = 1024*$K;        $G = 1024*$M;        $file_size = filesize($file_name);        if($file_size>$G){            $file_size = ($file_size / $G)." G";        }elseif($file_size>$M){            $file_size = ($file_size / $M) ." M";        }elseif($file_size > $K){            $file_size = ($file_size /$K). " K";        }else{            $file_size = $file_size. " byte";        }        return $file_size;    }    echo getFileSize("new_file.html");?><div class="clear">
                 
              
              
        
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