There are four ways of escaping from HTML and entering "PHP code mode":
Example 5-1. Ways of escaping from HTML 1. <? echo ("this is the simplest, an SGML processing instruction\n"); ?>
2. <?php echo("if you want to serve XML documents, do like this\n"); ?>
3. <script language="php">
echo ("some editors (like FrontPage) don't
like processing instructions");
</script>
4. <% echo ("You may optionally use ASP-style tags"); %>
<%= $variable; # This is a shortcut for "<%echo .." %>
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The first way is only available if short tags have been enabled (either by calling short_tags(), they are configured on using the short_tags run-time configuration setting, or they are enabled using the --enable-short-tags compile-time configuration setting.
The fourth way is only available if ASP-style tags have been enabled using either the asp_tags configuration setting or the --enable-asp-tags compile-time configuration setting.
Note: Support for ASP-style tags was added in 3.0.4.
The closing "bracket" for the block will include the immediately trailing newline if one is present.