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PHP基本的文件和文件夹操作常用的汇总

时间:2015-12-08 20:13:23      阅读:149      评论:0      收藏:0      [点我收藏+]

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资源:http://www.ido321.com/835.html

一、基本文件的操作

文件的基本操作有:文件推断、文件夹推断、文件大小、读写性推断、存在性推断及文件时间等

   1: <?php
   2:     header("content-type","text/html;charset=utf-8");
   3: /*
   4: *声明一个函数。传入文件名称获取文件属性
   5: *@param string $fileName 文件名
   6: */
   7: function getFilePro($fileName)
   8: {
   9:     if(!file_exists($fileName))
  10:     {
  11:         echo ‘文件不存在<br/>‘;
  12:         return;
  13:     }
  14:     /*是否是普通文件*/
  15:     if(is_file($fileName))
  16:     {
  17:         echo $fileName.‘是一个文件<br/>‘;
  18:     }
  19:     /*是否是文件夹*/
  20:     if(is_dir($fileName))
  21:     {
  22:         echo $fileName.‘是一个文件夹‘;
  23:     }
  24:     /*输出文件的型态*/
  25:     echo ‘文件型态是:‘.getFileType($fileName).‘<br/>‘;
  26:     /*文件大小,转换单位*/
  27:     echo ‘文件大小是:‘.getFileSize(filesize($fileName)).‘<br/>‘;
  28:     /*文件是否可读*/
  29:     if(is_readable($fileName))
  30:     {
  31:         echo ‘文件可读<br/>‘;
  32:     }
  33:     /*文件是否可写*/
  34:     if(is_writable($fileName))
  35:     {
  36:         echo ‘文件可写<br/>‘;
  37:     }
  38:     /*文件是否可运行*/
  39:     if(is_executable($fileName))
  40:     {
  41:         echo ‘文件可运行<br/>‘;
  42:     }
  43:
  44:     echo ‘文件创立时间:‘.date(‘Y年m月j日‘,filectime($fileName)).‘<br/>‘;
  45:     echo ‘文件最后改动时间:‘.date(‘Y年m月j日‘,filemtime($fileName)).‘<br/>‘;
  46:     echo ‘文件最后打开时间:‘.date(‘Y年m月j日‘,fileatime($fileName)).‘<br/>‘;
  47: }
  48:
  49: /*
  50: *声明一个函数,返回文件类型
  51: *@param string $fileName 文件名
  52: */
  53: function getFileType($fileName)
  54: {
  55:     $type = ‘‘;
  56:     switch(filetype($fileName))
  57:     {
  58:         case ‘file‘:$type .= ‘普通文件‘;break;
  59:         case ‘dir‘:$type .= ‘文件夹文件‘;break;
  60:         case ‘block‘:$type .= ‘块设备文件‘;break;
  61:         case ‘char‘:$type .= ‘字符设备文件‘;break;
  62:         case ‘filo‘:$type .= ‘管道文件‘;break;
  63:         case ‘link‘:$type .= ‘符号链接‘;break;
  64:         case ‘unknown‘:$type .= ‘未知文件‘;break;
  65:         default:
  66:     }
  67:     return $type;
  68: }
  69:
  70: /*
  71: *声明一个函数,返回文件大小
  72: *@param int $bytes 文件字节数
  73: */
  74: function getFileSize($bytes)
  75: {
  76:     if($bytes >= pow(2,40))
  77:     {
  78:         $return = round($bytes / pow(1024,4),2);
  79:         $suffix = ‘TB‘;
  80:     }
  81:     else if($bytes >= pow(2,30))
  82:     {
  83:         $return = round($bytes / pow(1024,3),2);
  84:         $suffix = ‘GB‘;
  85:     }
  86:     else if($bytes >= pow(2,20))
  87:     {
  88:         $return = round($bytes / pow(1024,2),2);
  89:         $suffix = ‘MB‘;
  90:     }
  91:     else if($bytes >= pow(2,10))
  92:     {
  93:         $return = round($bytes / pow(1024,1),2);
  94:         $suffix = ‘KB‘;
  95:     }
  96:     else
  97:     {
  98:         $return = $bytes;
  99:         $suffix = ‘B‘;
 100:     }
 101:     return $return." ".$suffix;
 102: }
 103:
 104: /*调用函数。传入test文件夹下的test.txt文件*/
 105: getFilePro(‘./test/div.html‘);
 106: ?

>

结果:
技术分享

二、文件夹的操作

文件夹的操作有:遍历文件夹、删除、复制、大小统计等

1、遍历文件夹

   1: /*
   2: *遍历文件夹
   3: *@param string $dirName 文件夹名
   4: */
   5: function findDir($dirName)
   6: {
   7:     $num  = 0;  /*统计子文件个数*/
   8:     $dir_handle = opendir($dirName);  /*打开文件夹*/
   9:     /*输出文件夹文件*/
  10:     echo ‘<table border="0" align="center" width="600" cellspacing="0" cellpadding="0">‘;
  11:     echo ‘<caption><h2>文件夹‘.$dirName.‘下的文件</h2></caption>‘;
  12:     echo ‘<tr align="left" bgcolor="#cccccc"‘;
  13:     echo ‘<th>文件名称</th><th>文件大小</th><th>文件类型</th><th>改动时间</th></tr>‘;
  14:
  15:     while($file = readdir($dir_handle))
  16:     {
  17:         $dirFile = $dirName.‘/‘.$file;
  18:         $bgcolor = $num++%2==0?‘#ffffff‘:‘#cccccc‘;
  19:         echo ‘<tr bgcolor=‘.$bgcolor.‘>‘;
  20:         echo ‘<td>‘.$file.‘</td>‘;
  21:         echo ‘<td>‘.filesize($dirFile).‘</td>‘;
  22:         echo ‘<td>‘.filetype($dirFile).‘</td>‘;
  23:         echo ‘<td>‘.date(‘Y/n/t‘,filemtime($dirFile)).‘</td>‘;
  24:         echo ‘</tr>‘;
  25:     }
  26:     echo "</table>";
  27:     closedir($dir_handle);  /*关闭文件夹*/
  28:     echo "在<b>".$dirName."</b>文件夹下共同拥有<b>".$num.‘</b>个子文件‘;
  29: }
  30: /*传递当前文件夹下的test文件夹*/
  31: findDir(‘./test‘);

结果

技术分享

2、统计文件夹大小

   1: /*
   2: *统计文件夹大小
   3: *@param string $dirName 文件夹名
   4: *@return double
   5: */
   6:
   7: function dirSize($dirName)
   8: {
   9:     $dir_size = 0;
  10:     if($dir_handle = @opendir($dirName))
  11:     {
  12:         while ($fileName = readdir($dir_handle))
  13:         {
  14:              /*排除两个特殊文件夹*/
  15:             if($fileName != ‘.‘ && $fileName != ‘..‘)
  16:             {
  17:                 $subFile = $dirName.‘/‘.$fileName;
  18:                 if(is_file($subFile))
  19:                 {
  20:                     $dir_size += filesize($subFile);
  21:                 }
  22:                 if(is_dir($subFile))
  23:                 {
  24:                     $dir_size += dirSize($subFile);
  25:                 }
  26:             }
  27:         }
  28:         closedir($dir_handle);
  29:         return $dir_size;
  30:     }
  31: }
  32: /*传递当前文件夹下的test文件夹*/
  33: $dir_size = dirSize(‘./test‘);
  34: echo ‘./test文件夹文件大小是:‘.round($dir_size / pow(1024,1),2).‘KB‘;

结果

技术分享

3、删除文件夹

   1: /*
   2: *删除文件夹
   3: *@param string $dirName 文件夹名
   4: */
   5: function delDir($dirName)
   6: {
   7:     /*php中的mkdir函数就能够创建文件夹*/
   8:     if(file_exists($dirName))
   9:     {
  10:         if($dir_handle = @opendir($dirName))
  11:         {
  12:             while ($fileName = readdir($dir_handle))
  13:             {
  14:                  /*排除两个特殊文件夹*/
  15:                 if($fileName != ‘.‘ && $fileName != ‘..‘)
  16:                 {
  17:                     $subFile = $dirName.‘/‘.$fileName;
  18:                     if(is_file($subFile))
  19:                     {
  20:                         unlink($subFile);
  21:                     }
  22:                     if(is_dir($subFile))
  23:                     {
  24:                         delDir($subFile);
  25:                     }
  26:                 }
  27:             }
  28:             closedir($dir_handle);
  29:             rmdir($dirName);
  30:             return $dirName.‘文件夹已经删除‘;
  31:         }
  32:     }
  33: }
  34: /*传递test文件夹的副本test1*/
  35: echo delDir(‘./test1‘);

删除成功的提示信息

技术分享

4、拷贝文件夹

   1: /*
   2: *拷贝文件夹
   3: *@param string $dirSrc 原文件夹名
   4: *@param string $dirTo 目标文件夹名
   5: */
   6: function copyDir($dirSrc,$dirTo)
   7: {
   8:     if(is_file($dirTo))
   9:     {
  10:         echo ‘目标文件夹不能创建‘;/*目标不是一个*/
  11:         return;
  12:     }
  13:     if(!file_exists($dirTo))
  14:     {
  15:         /*文件夹不存在则创建*/
  16:         mkdir($dirTo);
  17:     }
  18:     if($dir_handle = @opendir($dirSrc))
  19:     {
  20:         while ($fileName = readdir($dir_handle))
  21:         {
  22:              /*排除两个特殊文件夹*/
  23:             if($fileName != ‘.‘ && $fileName != ‘..‘)
  24:             {
  25:                 $subSrcFile = $dirSrc.‘/‘.$fileName;
  26:                 $subToFile = $dirTo.‘/‘.$fileName;
  27:                 if(is_file($subSrcFile))
  28:                 {
  29:                     copy($subSrcFile,$subToFile);
  30:                 }
  31:                 if(is_dir($subSrcFile))
  32:                 {
  33:                     copyDir($subSrcFile,$subToFile);
  34:                 }
  35:             }
  36:         }
  37:         closedir($dir_handle);
  38:         return $dirSrc.‘文件夹已经拷贝到‘.$dirTo.‘文件夹‘;
  39:     }
  40: }
  41: echo copyDir(‘./test‘,‘../testcopy‘);

PHP基本的文件和文件夹操作常用的汇总

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原文地址:http://www.cnblogs.com/gcczhongduan/p/5029943.html

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