PHP tries very hard to remain BC, in fact, some will say too hard :) The register_globals change was the biggest change in PHP history, can't think of any other change that comes close. And, that only changed the default value for this directive, you can turn it on if you wish.
The PHP 4 book that you have has a typo, there simply is no php_info(). Regards, Philip Olson On Wed, 10 Jul 2002, George Hester wrote: > Thanks that worked just fine. But now I am irritated as hell. Obviously there > is no backwards compatibility with new releases. Does this mean if I install a > new version of PHP then all books published before that date are worthless? > Seems so. > > For example in a book discussing PHP 3 it says: > > <? > phpinfo(); > ?> > > This works just fine. In a book that discusses PHP 4 it says: > > <? > php_info() > ?> > > This gives "Fatal error: Call to undefined function: php_info() in > c:\inetpub\wwwroot\php\phpinfo.php on line 2." > > So it's not just backwards compatibility it is careless planning. This is not > good. I will have to search hi and lo to determine if a failure is due to > incorrect syntax because of version and not just careless typing on my part. > > I remember when FORTRAN was being developed we were assurred that all previous > commands from older versions would continue operative in the new. FORTRAN 77 > to FORTRAN 90. I think the developers of PHP ought to consider why the > developers of FORTRAN thought that might be a good thing to do. It is still > used to this day. Write a FORTRAN 77 prog and it will compile and run on a > FORTRAN 90 compiler out of the box. Thanks again. > > -- > George Hester > _________________________________ > "Justin French" <[EMAIL PROTECTED]> wrote in message > [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... > > Try: > > > > <? echo $_SERVER['HTTP_USER_AGENT']; ?> > > > > ... you might have a newer version of PHP (4.1+), which uses the global > > arrays like: > > > > $_SERVER > > $_POST > > $_GET > > $_SESSION > > $_COOKIE > > > > ... > > > > > > Justin French > > > > > > > > > > on 11/07/02 12:32 PM, George Hester ([EMAIL PROTECTED]) wrote: > > > > > I have this in my web site not in an executable folder: > > > > > > <HTML> > > > <HEAD> > > > <TITLE>My First PHP Program</TITLE> > > > </HEAD> > > > <BODY> > > > <?php echo "Hello World!"; ?> > > > </BODY> > > > </HTML> > > > > > > No problem. I then put this in the same folder: > > > > > > <HTML> > > > <HEAD> > > > <TITLE>My Second PHP Program</TITLE> > > > </HEAD> > > > <BODY> > > > <?php echo $HTTP_USER_AGENT; ?> > > > </BODY> > > > </HTML> > > > > > > Nothing appears. What's wrong? > > > > > > > > > -- > > > George Hester > > > _________________________________ > > > > > > > > > > > > -- > PHP General Mailing List (http://www.php.net/) > To unsubscribe, visit: http://www.php.net/unsub.php > -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
