How can PHP developers effectively integrate custom BBCode functionality with database content in web applications?

To integrate custom BBCode functionality with database content in web applications, PHP developers can create a function that parses the BBCode tags and replaces them with the corresponding HTML markup. This function can be applied to the database content before displaying it on the web page.

function parseBBCode($content) {
    $bbcode = array(
        '[b]' => '<strong>',
        '[/b]' => '</strong>',
        '[i]' => '<em>',
        '[/i]' => '</em>',
        // Add more custom BBCode tags and their corresponding HTML markup here
    );

    foreach ($bbcode as $tag => $replacement) {
        $content = str_replace($tag, $replacement, $content);
    }

    return $content;
}

// Example usage
$dbContent = "This is a [b]bold[/b] and [i]italic[/i] text.";
echo parseBBCode($dbContent);