What are the best practices for optimizing forum posts for search engine indexing in PHP?

When optimizing forum posts for search engine indexing in PHP, it is important to ensure that the content is easily accessible to search engine crawlers. This can be achieved by using clean URLs, optimizing meta tags, and structuring the content with relevant keywords. Additionally, implementing proper HTML markup and avoiding duplicate content can also help improve search engine visibility.

// Example code snippet for optimizing forum posts for search engine indexing

// Clean URL function
function cleanURL($url) {
    return strtolower(preg_replace('/[^a-zA-Z0-9]/', '-', $url));
}

// Meta tag optimization
$metaTitle = "Forum Post Title";
$metaDescription = "Description of the forum post content.";
$metaKeywords = "forum, post, content, keywords";

// HTML markup
echo "<h1>{$metaTitle}</h1>";
echo "<p>{$metaDescription}</p>";

// Avoid duplicate content
// Check if the post content is unique before displaying it
if($postContent != $previousPostContent) {
    echo $postContent;
}