Optimizing this snippet.

[sneamia]

if (!empty($_POST['query'])) {
	$dict = file_get_contents('sowpods.txt');  // Get contents of dictionary in $dict.
	if (strpos($dict, "\n" . strtoupper(htmlentities($_POST['query'])) . "\n") === false) {
		echo '<div id="no"><p>No</p></div>';
	} else {
		echo '<div id="yes"><p>Yes</p></div>';
	}
}

 

The SOWPODS dictionary is arranged like:

AARDVARK
AARDVARKS
AARDWOLF
AARDWOLVES

 

A \n before each word, and a \n after.

 

How would you optimize this code snippet?

[fnairb]

If you are running on a UNIX system it may be faster to use a system call and grep the file.