Can you try using
<?php print("Hello PHP."); ?>
OR
<?php echo "Hello PHP."; ?>
<?php ?>
or <?= ?>
- standard tags
<? ?>
- short tags, need short_open_tag enabled in php.ini.
You can find the currently loaded php.ini
file location using <?php phpinfo();?>
When PHP parses a file, it looks for opening and closing tags, which are which tell PHP to start and stop interpreting the code between them. Parsing in this manner allows PHP to be embedded in all sorts of different documents, as everything outside of a pair of opening and closing tags is ignored by the PHP parser.
PHP also allows for short open tags (which are discouraged because they are only available if enabled with short_open_tag php.ini configuration file directive, or if PHP was configured with the --enable-short-tags option.