readdir(3) [php man page]

READDIR(3)								 1								READDIR(3)

readdir - Read entry from directory handle

SYNOPSIS

       string readdir ([resource  $dir_handle])

DESCRIPTION

	Returns the name of the next entry in the directory. The entries are returned in the order in which they are stored by the filesystem.

PARAMETERS

	      o $dir_handle
		-  The directory handle resource previously opened with opendir(3). If the directory handle is not specified, the last link opened
		by opendir(3) is assumed.

RETURN VALUES

	Returns the entry name on success or FALSE on failure.

       Warning

	      This function may return Boolean FALSE, but may also return a non-Boolean value which evaluates to FALSE. Please read the section on
	      Booleans for more information. Use the === operator for testing the return value of this function.

EXAMPLES

       Example #1

	      List all entries in a directory

	       Please  note the fashion in which readdir(3)'s return value is checked in the examples below. We are explicitly testing whether the
	      return value is identical to (equal to and of the same type as--see Comparison Operators for more information)  FALSE  since  other-
	      wise, any directory entry whose name evaluates to FALSE will stop the loop (e.g. a directory named "0").

	      <?php

	      if ($handle = opendir('/path/to/files')) {
		  echo "Directory handle: $handle
";
		  echo "Entries:
";

		  /* This is the correct way to loop over the directory. */
		  while (false !== ($entry = readdir($handle))) {
		      echo "$entry
";
		  }

		  /* This is the WRONG way to loop over the directory. */
		  while ($entry = readdir($handle)) {
		      echo "$entry
";
		  }

		  closedir($handle);
	      }
	      ?>

       Example #2

	       List all entries in the current directory and strip out . and ..

	      <?php
	      if ($handle = opendir('.')) {
		  while (false !== ($entry = readdir($handle))) {
		      if ($entry != "." && $entry != "..") {
			  echo "$entry
";
		      }
		  }
		  closedir($handle);
	      }
	      ?>

SEE ALSO

       is_dir(3), glob(3), opendir(3), scandir(3).

PHP Documentation Group 														READDIR(3)

OPENDIR(3)								 1								OPENDIR(3)

opendir - Open directory handle

SYNOPSIS

       resource opendir (string  $path, [resource  $context])

DESCRIPTION

	Opens up a directory handle to be used in subsequent closedir(3), readdir(3), and rewinddir(3) calls.

PARAMETERS

	      o $path
		- The directory path that is to be opened

	      o $context
		- For a description of the $context parameter, refer to the streams section of the manual.

RETURN VALUES

	Returns a directory handle resource on success, or FALSE on failure.

	If  $path  is  not  a  valid  directory or the directory can not be opened due to permission restrictions or filesystem errors, opendir(3)
       returns FALSE and generates a PHP error of level  E_WARNING. You can suppress the error output of opendir(3) by prepending '@' to the front
       of the function name.

CHANGELOG

       +--------+---------------------------------------------------+
       |Version |						    |
       |	|						    |
       |	|		     Description		    |
       |	|						    |
       +--------+---------------------------------------------------+
       | 5.0.0	|						    |
       |	|						    |
       |	|      $path supports the ftp:// URL wrapper.	    |
       |	|						    |
       | 4.3.0	|						    |
       |	|						    |
       |	| $path  can  also be any URL which supports direc- |
       |	| tory listing, however only the file:// URL  wrap- |
       |	| per supports this in PHP 4			    |
       |	|						    |
       +--------+---------------------------------------------------+
EXAMPLES

       Example #1

	      opendir(3) example

	      <?php
	      $dir = "/etc/php5/";

	      // Open a known directory, and proceed to read its contents
	      if (is_dir($dir)) {
		  if ($dh = opendir($dir)) {
		      while (($file = readdir($dh)) !== false) {
			  echo "filename: $file : filetype: " . filetype($dir . $file) . "
";
		      }
		      closedir($dh);
		  }
	      }
	      ?>

	      The above example will output something similar to:

	      filename: . : filetype: dir
	      filename: .. : filetype: dir
	      filename: apache : filetype: dir
	      filename: cgi : filetype: dir
	      filename: cli : filetype: dir

SEE ALSO

       is_dir(3), readdir(3), dir(3).

PHP Documentation Group 														OPENDIR(3)