<?php
/* Prototype: bool symlink ( string $target, string $link );
   Description: creates a symbolic link to the existing target with the specified name link

   Prototype: bool is_link ( string $filename );
   Description: Tells whether the given file is a symbolic link.

   Prototype: bool link ( string $target, string $link );
   Description: Create a hard link

   Prototype: int linkinfo ( string $path );
   Description: Gets information about a link
*/

/* Variation 1 : Creating links across directories where linkname is stored as an object and array member */

// creating temp directory which will contain temp file and links created 
$file_path = dirname(__FILE__);
$dirname = "$file_path/symlink_link_linkinfo_is_link_variation1/test/home";
mkdir($dirname, 0777, true);

// creating temp file; links are created to this file later on
$filename = "$file_path/symlink_link_linkinfo_is_link_variation1/symlink_link_linkinfo_is_link_variation1.tmp";
$fp = fopen($filename, "w");
fclose($fp);

echo "*** Testing symlink(), link(), linkinfo() and is_link() with linknames stored as members in an object ***\n";
class object_temp {
  var $linkname;
  function object_temp($link) {
    $this->linkname = $link;
  }
}

$obj = new object_temp("$dirname/symlink_link_linkinfo_is_link_link.tmp");
/* Testing on soft links */
echo "\n-- Working with soft links --\n";
// creating soft link
var_dump( symlink($filename, $obj->linkname) );
// check if the link exists
var_dump( linkinfo($obj->linkname) );
// check if link is soft link
var_dump( is_link($obj->linkname) );
// delete the link created
unlink($obj->linkname);
// clear the cache
clearstatcache();

/* Testing on hard links */
echo "\n-- Working with hard links --\n";
// creating hard link
var_dump( link($filename, $obj->linkname) ); 
// check if the link exists
var_dump( linkinfo($obj->linkname) );
// check if link is soft link; expected: false as the link is a hardlink
var_dump( is_link($obj->linkname) ); 
// delete the link created
unlink($obj->linkname);
// clear the cache
clearstatcache();

echo "\n*** Testing symlink(), link(), linkinfo() and is_link() with linknames stored as members of an array ***\n";

$link_arr = array("$dirname/symlink_link_linkinfo_is_link_link.tmp");

/* Testing on soft links */
echo "\n-- Working with soft links --\n";
// creating soft link
var_dump( symlink($filename, $link_arr[0]) );
// check if the link exist
var_dump( linkinfo($link_arr[0]) );
// check if link is soft link
var_dump( is_link($link_arr[0]) );
// delete the link created
unlink($link_arr[0]);
// clear the cache
clearstatcache();

/* Testing on hard links */
echo "\n-- Working with hard links --\n";
// creating hard link
var_dump( link($filename, $link_arr[0]) );
// check if the link exist
var_dump( linkinfo($link_arr[0]) );
// check if link is soft link; expected: false as this is a hardlink
var_dump( is_link($link_arr[0]) );
// delete the links created
unlink($link_arr[0]);
// clear the cache
clearstatcache();

echo "Done\n";
?>
