闲着没事，帮朋友写了一个文件夹遍历类，但是写到了一半，他说不用了，所以下边是功能不是很全的代码，但是基本功能已经实现了

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       fileArray[][0] = $fileName; 34                         }elseif(is_dir($dir.'/'.$fileName)){ 35                             $this->dirArray[][0] = $fileName.'/'; 36                         } 37                     } 38                 } 39             } 40             private function setDirInfo(){ 41                 foreach($this->dirArray as $key=>$value){ 42                     $this->dirArray[$key][1] = date('Y-m-d',filemtime($value[0])); 43                     $this->dirArray[$key][2] = '目录'; 44                     $this->dirArray[$key][3] = '—'; 45                 } 46             } 47             public function getDirInfo(){ 48                 $this->setDirInfo(); 49                 return $this->dirArray; 50             } 51             private function setFileInfo(){ 52                 foreach($this->fileArray as $key=>$value){ 53                     $this->fileArray[$key][1] = date('Y-m-d',filemtime($value[0])); 54                     if(strrpos($value[0],'.')){ 55                         $this->fileArray[$key][2] = substr($value[0],(strrpos($value[0],'.')+1)); 56                     }else { 57                         $this->fileArray[$key][2] = '—'; 58                     } 59                     $this->fileArray[$key][3] = $this->getSize($value[0]); 60                     //@todo:preview 这里获取了文件的预览，可以更改一下 61                     if($preview = $this->getPreview($value[0])){ 62                         $this->fileArray[$key][4] = $preview; 63                     } 64                 } 65             } 66             public function getFileInfo(){ 67                 $this->setFileInfo(); 68                 return $this->fileArray; 69             } 70             private function getSize($fileName){ 71                 if(!file_exists($fileName)||!is_readable($fileName)){ 72                     return '—'; 73                 } 74                 $size = filesize($fileName); 75                 $units=array('B','KB','MB','GB','TB'); 76                 for($i=0;$size>=1024&&$i<4;$i++) 77                     $size/=1024; 78                 return round($size,2).$units[$i]; 79             } 80             /* 81             * 82             *    @tip:出于安全考虑，只能预览图片文件及普通文本文件 83             * 84             */ 85             static function getPreview($fileName){ 86                 if(!file_exists($fileName) || !is_readable($fileName)){ 87                     return ''; 88                 } 89                 $imgTypeArray = array('jpg','png','gif','bmp','ico'); 90                 $textTypeArray = array('txt','lrc','sql','xml'); 91                 $type = substr($fileName,(strrpos($fileName,'.')+1)); 92                 $type = trim($type); 93                 if(in_array(strtolower($type),$imgTypeArray)){ 94                     return ''; 95                 }elseif(in_array(strtolower($type),$textTypeArray)){ 96                     $result = @file_get_contents($fileName); 97                     if(mb_check_encoding($result,'utf-8')){ 98                         $result = mb_convert_encoding($result,'gbk','utf-8'); 99                     }100                     return '
'.$result.'
';101                 }else {102                     return false;103                 }104                 105             }106         }107         $index = new getIndex();108         print_r($index->getFileInfo());109 110     ?>111 
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