Are there any security considerations to keep in mind when implementing a word censor function in PHP to prevent malicious content from being stored in a database?

When implementing a word censor function in PHP to prevent malicious content from being stored in a database, it is important to consider the possibility of bypassing the censor by using variations of the censored words or encoding techniques. To address this, you can create a comprehensive list of censored words and their variations, as well as implement additional checks to detect and block encoded or obfuscated content.

function censor_content($content) {
    $censored_words = array('badword1', 'badword2', 'badword3');
    
    foreach($censored_words as $word) {
        $content = preg_replace("/\b$word\b/i", '***', $content);
    }
    
    return $content;
}

$input_content = "This is a badword1 example of censoring.";
$cleaned_content = censor_content($input_content);

echo $cleaned_content;