How to write a PHP coding

[kdjuiopo]

How to write a PHP coding to list out all files and directories as links to them?

This is somewhat similar to some index pages. When new file or folder is added to the directory, HTML page should display the newly created file/folder together with previous ones after it is being refreshed. (prefer in alphabatical order)

How to achieve this sort of functionality in PHP? Please provide sample coding as well.

[rajmv]

I wrote a function to get a directory listing into php;

Code: Select all


function getFilePathList (
//TODO: relatively untested complicated function, might be buggy
   
   $path,                        // start path
   $recursive = false,               // if true, we also process any subdirectory.
   $fileSpecRE = "/.*/",            // Regular Expression file specs - will be matched against any filename found.
   // ^-- this is NOT the same as normal "somefile-*.something.extension" type wildcards. see example above.
   $fileTypesFilter = array (),      // array (int=>string (filetype() result) ==== int=>"file"|"dir" )
   $ownerFilter = array (),         // array (int=>string (username) ); only return files owned by someone in $ownerFilter.
   $fileSizeMin = null,            // If >=0, any files returned must have a minimum size of $fileSizeMin bytes.
   $fileSizeMax = null,            // same as above, but maximum size

   /* all date parameters below must be provided in the mktime() format. */
   $aTimeMin = null,               // calls fileatime(). Read The Friendly Manual. http://www.php.net/manual/
   $aTimeMax = null,               //   ^- access includes a program reading from this file.
   $mTimeMin = null,               // calls filemtime(). RTFM.
   $mTimeMax = null,
   $cTimeMin = null,               // calls filectime(). rtfm.
   $cTimeMax = null,
   /*   on windows XP, cTime = creation time; mTime = modified time; aTime = access time.
      I also noted some BUGS in retrieving these dates from my system.
   */
   $listCall = ""                  // interesting feature; lets you include results from any informational file function(s).
/*   TODO : fix $*Date* parameter handling,
   returns an array consisting of all files in a directory structure, filtered by the parameters given.
   results are returned in directory order. if ($recursive) then subdirectory content is listed before file content.
   OKAY, this one is monolithic :)   But very usefull, so an exception to the rule is granted here.
example:
   htmlDump (getFilePathList("c:/dat/web", true, "/.*\.php$|.*\.php\d$|.*\.inc$/",
      array(), array(), null, null, null, null, null, null, null, null,
      "\"ctime=\".date (\"Y/m/d H:m:s\", filectime (\$filepath)).".
      "\" - atime=\".date (\"Y/m/d H:m:s\", fileatime (\$filepath)).".
      "\" - mtime=\".date (\"Y/m/d H:m:s\", filemtime (\$filepath)).".
      ";"
      ));
   -== this returns an array with complete filepaths of all files under c:/dat/web, that have an extension like
      *.php, *.php3, *.php4 or *.inc.
      for my system, it returns:
         array(4) {
           [0]=>
           string(115) "c:/dat/web/index.php - [listCall=ctime=2003/05/11 18:05:26 - atime=2003/05/16 05:05:44 - mtime=2003/05/16 05:05:44]"
           [1]=>
           string(122) "c:/dat/web/preProcessor.php - [listCall=ctime=2003/05/15 16:05:55 - atime=2003/05/16 04:05:47 - mtime=2003/05/15 17:05:35]"
           [2]=>
           string(116) "c:/dat/web/source.php - [listCall=ctime=2003/05/11 18:05:26 - atime=2003/05/16 04:05:47 - mtime=2003/04/28 13:04:07]"
           [3]=>
           string(117) "c:/dat/web/sources.php - [listCall=ctime=2003/05/11 18:05:26 - atime=2003/05/16 04:05:50 - mtime=2003/05/12 00:05:22]"
}
      in this example, the $listCall is kinda complicated. but only to show it's power.
      if you're having trouble debugging your $listCall, turn on the relevant htmlDump() call in this function.
   
another example:
   htmlDump (getFilePathList("c:/dat/web", false, "/.*\.php$|.*\.php\d$|.*\.inc$/",
      array(), array(), null, null, null, null, null, time()-mktime (0,0,0,0,1,0));
   -== this returns, for my system, all *.php,*.php3/4,*.inc files in c:/dat/web, that havent changed since 24 hours ago:
*/

) {


   $result = array();
   //if (!in_array("file",$fileTypesFilter)) $fileTypesFilter[count($fileTypesFilter)]="file";
   //htmlOut (" --== $path ==--");
   if ($path[strlen($path)-1]!="/") $path.="/";
   if ($handle = opendir($path)) {
      /* This is the correct way to loop over the directory. */
      while (false !== ($file = readdir($handle))) {
      if ($file != "." && $file != "..") {
      
         $pass = true;
         $ft = filetype($path.$file);
         if (!in_array ($ft, $fileTypesFilter)) $pass = false;
         // htmlDump ($ft, "filesys");
         if ($ft=="dir") $filepath = $path.$file."/"; else $filepath = $path.$file;
         //htmlDump ($filepath);
         //htmlDump ($fileSpecRE."  ---- ".$file);
         if ($pass) $pass = preg_match ($fileSpecRE, strToLower($file));
         //htmlDump ($pass);
         if ($pass && count($ownerFilter)>0) {
            $fo = fileowner ($filepath);
            if ($fo!=false) {
               $fo = posix_getpwuid($fo);
               if (!in_array ($fo, $ownerFilter)) $pass=false;
            } else {
            //couldn't retrieve username. be strict & safe, fail.
               $pass = false;
            }
         }
         if ($pass && isset($fileSizeMin)) if (filesize ($filepath) < $fileSizeMin) $pass=false;
         if ($pass && isset($fileSizeMax)) if (filesize ($filepath) > $fileSizeMax) $pass=false;

         if ($pass && isset($aTimeMin))
            $pass=evalDate ("fileatime", $filepath, ">=", $aTimeMin, "aTimeMin");
         if ($pass==true && isset($aTimeMax))
         //   ^- if ($stringValue) == always true!,
         //      so explicitly check for boolean true result after calling
         //      functions that may return an (error) string.
            $pass=evalDate ("fileatime", $filepath, "<=", $aTimeMax, "aTimeMax");
         if ($pass==true && isset($mTimeMin))
            $pass=evalDate ("filemtime", $filepath, ">=", $mTimeMin, "mTimeMin");
         if ($pass==true && isset($mTimeMax))
            $pass=evalDate ("filemtime", $filepath, "<=", $mTimeMax, "mTimeMax");
         if ($pass==true && isset($cTimeMin))
            $pass=evalDate ("filectime", $filepath, ">=", $cTimeMin, "cTimeMin");
         if ($pass==true && isset($cTimeMax))
            $pass=evalDate ("filectime", $filepath, "<=", $cTimeMax, "cTimeMax");

         if ($pass==true) {
            //htmlOut ("PASSED");
            $r = "";

            $ev = "\$r = $listCall";
            //htmlDump ($ev);
            if (!empty($listCall)) eval ($ev);
            $idx = count ($result);
            if (!empty($r)) $r = " - [listCall=$r]";
            $result[$idx] = $filepath.$r;
         }
         if (is_string($pass)) {
            //htmlOut ("PASSED - checks failed");
            $result[count($result)] = "[$pass]".$filepath;
         }
         if ($recursive && $ft=="dir") {
            $subdir = getFilePathList ($filepath,$recursive, $fileSpecRE,
               $fileTypesFilter, $ownerFilter, $fileSizeMin, $fileSizeMax,
               $aTimeMin, $aTimeMax, $mTimeMin, $mTimeMax,
               $cTimeMin, $cTimeMax, $listCall);
            array_splice ($result, count($result)+1, 0, $subdir);
         }
      }
      }
   }
   //htmlDump ($result, "result");
   return $result;
}

You then call this function to get a recursive directory listing of just mp3's like so:

Code: Select all

define ("FILE_FORMATS", "/(.*\.mp3$)/");
$files = getFilePathList ('/path/to/scan/', true, FILE_FORMATS, array('file'));