php man page for move_uploaded_file

MOVE_UPLOADED_FILE(3)							 1						     MOVE_UPLOADED_FILE(3)

move_uploaded_file - Moves an uploaded file to a new location

SYNOPSIS
       bool move_uploaded_file (string	$filename, string  $destination)

DESCRIPTION
	This  function	checks to ensure that the file designated by $filename is a valid upload file (meaning that it was uploaded via PHP's HTTP
       POST upload mechanism). If the file is valid, it will be moved to the filename given by $destination.

	This sort of check is especially important if there is any chance that anything done with uploaded files could reveal  their  contents	to
       the user, or even to other users on the same system.

PARAMETERS
	      o $filename
		- The filename of the uploaded file.

	      o $destination
		- The destination of the moved file.

RETURN VALUES
	Returns TRUE on success.

	If $filename is not a valid upload file, then no action will occur, and move_uploaded_file(3) will return FALSE.

	If  $filename  is  a  valid  upload file, but cannot be moved for some reason, no action will occur, and move_uploaded_file(3) will return
       FALSE. Additionally, a warning will be issued.

EXAMPLES
       Example #1

	      Uploading multiple files

	      <?php
	      $uploads_dir = '/uploads';
	      foreach ($_FILES["pictures"]["error"] as $key => $error) {
		  if ($error == UPLOAD_ERR_OK) {
		      $tmp_name = $_FILES["pictures"]["tmp_name"][$key];
		      $name = $_FILES["pictures"]["name"][$key];
		      move_uploaded_file($tmp_name, "$uploads_dir/$name");
		  }
	      }
	      ?>

NOTES
       Note

	      move_uploaded_file(3) is both safe mode and open_basedir aware. However, restrictions are placed only on the $destination path as to
	      allow  the moving of uploaded files in which $filename may conflict with such restrictions. move_uploaded_file(3) ensures the safety
	      of this operation by allowing only those files uploaded through PHP to be moved.

       Warning

	       If the destination file already exists, it will be overwritten.

SEE ALSO
       is_uploaded_file(3), rename(3), See Handling file uploads for a simple usage example.

PHP Documentation Group 												     MOVE_UPLOADED_FILE(3)