How can one improve the readability and efficiency of the existing PHP code for the guestbook, particularly in the sections related to autolinking, BBCode, and smilies?

The readability and efficiency of the existing PHP code for the guestbook can be improved by refactoring the autolinking, BBCode, and smilies sections. This can be achieved by breaking down the code into smaller, more manageable functions, utilizing regular expressions for pattern matching, and optimizing any repetitive or redundant code. 

// Autolinking URLs in the guestbook messages
function autolink($message) {
    return preg_replace('/(https?:\/\/\S+)/', '<a href="$1" target="_blank">$1</a>', $message);
}

// Parsing BBCode in the guestbook messages
function parseBBCode($message) {
    $bbcode = array(
        '/\[b\](.*?)\[\/b\]/is' => '<strong>$1</strong>',
        '/\[i\](.*?)\[\/i\]/is' => '<em>$1</em>',
        // Add more BBCode parsing rules as needed
    );
    
    return preg_replace(array_keys($bbcode), array_values($bbcode), $message);
}

// Converting smilies to images in the guestbook messages
function parseSmilies($message) {
    $smilies = array(
        ':)' => '<img src="smiley.png" alt=":)" />',
        // Add more smilies conversion rules as needed
    );
    
    return str_replace(array_keys($smilies), array_values($smilies), $message);
}

Keywords

autolinking BBCode smilies PHP code efficiency

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