How can bbcode be used to convert text formatting, images, links, and smileys into HTML in PHP?

To convert bbcode into HTML in PHP, you can use a library like "s9e/TextFormatter" which provides a BBCode parser and renderer. This library can handle text formatting, images, links, and smileys conversion from bbcode to HTML. You can simply pass the bbcode content to the library's parser and then render the HTML output.

// Include the library
require_once 'vendor/autoload.php';

// Create a new instance of the BBCode parser
$bbcodeParser = new s9e\TextFormatter\Parser();

// Parse the bbcode content
$bbcode = '[b]Bold Text[/b] [img]image.jpg[/img] [url=https://www.example.com]Link[/url] :)';
$html = $bbcodeParser->parse($bbcode)->render();

// Output the HTML
echo $html;