filectime(3) [php man page]

FILECTIME(3)								 1							      FILECTIME(3)

filectime - Gets inode change time of file

SYNOPSIS

       int filectime (string  $filename)

DESCRIPTION

	Gets the inode change time of a file.

PARAMETERS

	      o $filename
		- Path to the file.

RETURN VALUES

	Returns the time the file was last changed, or FALSE on failure. The time is returned as a Unix timestamp.

EXAMPLES

       Example #1

	      A filectime(3) example

	      <?php

	      // outputs e.g.  somefile.txt was last changed: December 29 2002 22:16:23.

	      $filename = 'somefile.txt';
	      if (file_exists($filename)) {
		  echo "$filename was last changed: " . date("F d Y H:i:s.", filectime($filename));
	      }

	      ?>

ERRORS
/EXCEPTIONS
	Upon failure, an E_WARNING is emitted.

NOTES

       Note

	       Note:  In most Unix filesystems, a file is considered changed when its inode data is changed; that is, when the permissions, owner,
	      group, or other metadata from the inode is updated. See also filemtime(3) (which is what you want to use when  you  want	to  create
	      "Last Modified" footers on web pages) and fileatime(3).

       Note

	       Note  also  that in some Unix texts the ctime of a file is referred to as being the creation time of the file. This is wrong. There
	      is no creation time for Unix files in most Unix filesystems.

       Note

	      Note that time resolution may differ from one file system to another.

       Note

	      The results of this function are cached. See clearstatcache(3) for more details.

       Tip

	      As of PHP 5.0.0, this function can also be used with some URL wrappers. Refer to "Supported Protocols  and  Wrappers"  to  determine
	      which wrappers support stat(3) family of functionality.

SEE ALSO

       filemtime(3).

PHP Documentation Group 													      FILECTIME(3)

READFILE(3)								 1							       READFILE(3)

readfile - Outputs a file

SYNOPSIS

       int readfile (string  $filename, [bool  $use_include_path = false], [resource  $context])

DESCRIPTION

	Reads a file and writes it to the output buffer.

PARAMETERS

	      o $filename
		- The filename being read.

	      o $use_include_path
		- You can use the optional second parameter and set it to TRUE, if you want to search for the file in the include_path, too.

	      o $context
		- A context stream resource.

RETURN VALUES

	Returns  the number of bytes read from the file. If an error occurs, FALSE is returned and unless the function was called as @readfile(3),
       an error message is printed.

EXAMPLES

       Example #1

	      Forcing a download using readfile(3)

	      <?php
	      $file = 'monkey.gif';

	      if (file_exists($file)) {
		  header('Content-Description: File Transfer');
		  header('Content-Type: application/octet-stream');
		  header('Content-Disposition: attachment; filename='.basename($file));
		  header('Expires: 0');
		  header('Cache-Control: must-revalidate');
		  header('Pragma: public');
		  header('Content-Length: ' . filesize($file));
		  readfile($file);
		  exit;
	      }
	      ?>

	      The above example will output something similar to:[NOT DISPLAYABLE MEDIA]Open / Save dialogue

NOTES

       Note

	      readfile(3) will not present any memory issues, even when sending large files, on its own. If you encounter an out of  memory  error
	      ensure that output buffering is off with ob_get_level(3).

       Tip

	      A  URL can be used as a filename with this function if the fopen wrappers have been enabled. See fopen(3) for more details on how to
	      specify the filename. See the "Supported Protocols and Wrappers" for links to information about what abilities the various  wrappers
	      have, notes on their usage, and information on any predefined variables they may provide.

       Note

	      Context support was added with PHP 5.0.0. For a description of contexts, refer to "Streams".

SEE ALSO

       fpassthru(3), file(3), fopen(3), include(3), require(3), virtual(3), file_get_contents(3), "Supported Protocols and Wrappers".

PHP Documentation Group 													       READFILE(3)