PHP Code to Insert ad unit if a post having a defined number of words in WordPress

Put this code in your desired page.php or single.php etc. to Insert ad unit if a post has a defined number of words in WordPress

<?php
		$content = get_the_content();
$word_count = str_word_count($content);

// Insert AdSense ad after 200 words
if ($word_count > 10) {
    echo 'yyy';
}

// Output the rest of the content
echo $content;

		?>