Php is very fussy about "garbage" characters that you cannot generally see.
There are such characters in the default installation files, located here in the first line of the script which I will show here with tildes "`",:
<?php~~//00423
The solution is to open this file in Notepad++ or other text editor, highlight what appears to be white space, between the second 'p' in php and the first slash '/' and replace it with a real space. Or you can just delete everything in between the 'p' and '/':
p/ and then add a real space.
Regards,
Brian Brown, Ph.D.