--TEST--
Test readlink() and realpath() functions: usage variation - invalid args
--FILE--
<?php
echo "*** Testing readlink() and realpath() : usage variations ***\n";

echo "\n*** Testing readlink() and realpath() with linkname as empty string, NULL and single space ***\n";
$link_string = array (
  /* linkname as spaces */
  " ",
  ' ',

  /* empty linkname */
  "",
  '',
 );
for($loop_counter = 0; $loop_counter < count($link_string); $loop_counter++) {
  echo "-- Iteration";
  echo $loop_counter + 1;
  echo " --\n";

  var_dump( readlink($link_string[$loop_counter]) );
  var_dump( realpath($link_string[$loop_counter]) );
}

echo "Done\n";
?>
--EXPECTF--
*** Testing readlink() and realpath() : usage variations ***

*** Testing readlink() and realpath() with linkname as empty string, NULL and single space ***
-- Iteration1 --

Warning: readlink(): %s in %s on line %d
bool(false)
%s
-- Iteration2 --

Warning: readlink(): %s in %s on line %d
bool(false)
%s
-- Iteration3 --

Warning: readlink(): %s in %s on line %d
bool(false)
string(%d) "%s"
-- Iteration4 --

Warning: readlink(): %s in %s on line %d
bool(false)
string(%d) "%s"
Done