<? echo '<p>Order processed.</p>'; ?>
This tag style is the simplest and follows the style of a Standard Generalized Markup Language (SGML) processing instruction.To use this type of tag—which is the shortest to type—you either need to enable the short_open_tag setting in your config file or compile PHP with short tags enabled.You can find more information on how to use this tag style in Appendix A.The use of this style is not recommended because, although this tag style is currently enabled by default, system administrators occasionally disable it because it interferes with XML dоcument declarations.