Example 1. php_strip_whitespace() example
<?php // PHP comment here
  /*  * Another PHP comment  */
  echo        php_strip_whitespace(__FILE__); // Newlines are considered whitespace, and are removed too: do_nothing(); ?>
 | 
The above example will output:
<?php
 echo php_strip_whitespace(__FILE__); do_nothing(); ?>  | 
     Notice the PHP comments are gone, as are the whitespace and newline
     after the first echo statement.