new to PHP and need some help

[mshort]

hey all,
I am new to PHP and have been working through a tutorial I found to create a hangman script but I am getting the error

Warning: Invalid argument supplied for foreach() in /- on line 29

here is the code I have

<?php 
	$words = array (
		"giants",
		"triangle",
		"particle",
		"birdhouse",
		"minimum",
		"flood"
	);

$letters = array('a','b','c','d','e','f','g','h','i','j','k','l','m','n','o',
'p','q','r','s','t','u','v','w','x','y','z');
$right = array_fill_keys($letters, '.');
$wrong = array();

if (stristr($word, $guess)) {
	$show = '';
	$right[$guess] = $guess;
	$wordletters = str_split($word);
	foreach ($wordletters as $letter) {
		$show .= $right[$letter];
	}
} else {
	$show = '';
	$wrong[$guess] = $guess;
	if (count($wrong) == 6) {
		$show = $word;
	} else {
		foreach ($wordletters as $letter) {
			$show .= $right[$letter];
		}
	}
}

?>

[bretticus]

Without trying to repair your code, I can tell you that the variable $wordletters is only initialized when stristr($word, $guess) equals true. Define your $wordletters array as an empty array BEFORE the if statement...

$wordletters = array();

...and check the example again as it appears it may have more errors.