bbcode.php

$body = preg_replace('#\[size=10\](.*)\[/size\]#isU', '<font size="10">\1</size>', $body);
$body = preg_replace('#\[size=12\](.*)\[/size\]#isU', '<font size="12">\1</size>', $body);
$body = preg_replace('#\[size=14\](.*)\[/size\]#isU', '<font size="14">\1</size>', $body);
$body = preg_replace('#\[size=16\](.*)\[/size\]#isU', '<font size="16">\1</size>', $body);
$body = preg_replace('#\[size=18\](.*)\[/size\]#isU', '<font size="18">\1</size>', $body);
$body = preg_replace('#\[size=20\](.*)\[/size\]#isU', '<font size="20">\1</size>', $body);
$body = preg_replace('#\[size=24\](.*)\[/size\]#isU', '<font size="24">\1</size>', $body);
$body = preg_replace('#\[size=30\](.*)\[/size\]#isU', '<font size="30">\1</size>', $body);