[RESOLVED] php problem

Htmlwiz

Im trying to get this to work but i am having problems with it...cans omeone help me out and tell me what i am doing wrong?

php:

<?php
$txt1="Hello World";
$txt2="Whats up?";
$welcome="Welcome to the Global Battle Network HQ";

echo $txt1 . $welcome;
echo $txt2;

thanks in advance

rkolbe

What is the error you are getting? That code looks ok to me.

laserlight

When asking for help, try to:
1. Use a topic heading that gives some idea what area you need help with. A topic entitled "php problem" is very undescriptive on a PHP centric messageboard.
2. Place any PHP code snippets in

forum bbcode tags. This preserves any formatting your code has (you format your code properly, right?), and also adds helpful syntax highlighting.
3. State what help you need - in particular, state how does your code snippet not work.

It is sometimes also useful to state the version of PHP that you use, and possibly your operating system, web server, and other related information.

Htmlwiz

it just shows a blank white screen when i go to the page its on

Sangre

try shift-F5 (complete reload)

Htmlwiz

ok thanks

Sangre

add this to the pages you make, on the very first line

header('Expires: Mon, 26 Jul 1997 05:00:00 GMT'); 
header('Pragma: no-cache');

it makes sure the page isnt cached, and thus providing you with old information

Htmlwiz

before <html> or after?

Sangre

before there is any output to the browser, or you will get an errormessage.

i allways do it on the very first line of the document, but im not sure if that is proper coding 😃

Htmlwiz

header('Expires: Mon, 26 Jul 1997 05:00:00 GMT');

what does the date mean?

bradgrafelman

It tells the browser that any cache used to display the page should only be considered valid until the precise datetime given. Setting this time to several years in the past (as in your question) is just another way of trying to lure the browser away from displayed a cached version of the page as opposed to retrieving and displaying the output from your server.

For more information, see this link: RFC 2616, Section 14-21

Htmlwiz

ah ok thanks

Htmlwiz

there was a problem when i put it on my page....chack it out at http://globalbattlenet.100webspace.net/test/test.htm

it just put

header('Expires: Mon, 26 Jul 1997 05:00:00 GMT');
header('Pragma: no-cache');

in text at the top of the page

bradgrafelman

Rename the page to .php instead of .htm

Htmlwiz

but its almost all in html
but ill try

Htmlwiz

ok thanks its work....thanks for your help

bradgrafelman

Htmlwiz wrote:
but its almost all in html

Well, there's two things you should consider:

PHP will only parse what's in between the <?php ?> tags. Having said that, there is probably a slight performance hit of running all of that HTML through the PHP parser. Now, since this is only one page (and not a very large page), this impact is most likely negligible. If you're really worried about it, you might look at point #2 below.
If the only thing you're really doing with PHP on this page is messing with some headers, you can probably just use a .htaccess file to let Apache do the same. All you'd do is something like this (assuming you are allowed to use .htaccess files as well as the mod_headers Apache module):
```
<Files test.htm>
    Header set Expires "Mon, 26 Jul 1997 05:00:00 GMT"
    Header set Pragma "no-cache"
</Files>
```

Htmlwiz wrote:
ok thanks its work....thanks for your help

Glad I could help! Don't forget to mark this thread resolved.

Htmlwiz

i will thanks again for you help

Sangre

even if you have only 1 character PHP, you still need to have it end with .php
Otherwise it will not go tru the PHP parser, and all your (secret) PHP coding will be visible to the user (in some cases).

Also, for the the headers i talked about, should be in php, like:

<?php 
header('Expires: Mon, 26 Jul 1997 05:00:00 GMT'); 
header('Pragma: no-cache'); 
?>

PHP is not visible to the browser.

if you create this:


<body>
<p>
Hello, this is just a phptest <br />
to show you php code is not visible<br />

<?php
$a = "this ";
$b = "is a ";
$c = "test";
echo $a . $b . $c;
?>
</p>
<p> See? </p>
</body>

Now, if you look at the SOURCE in your browser, you will not see the phpcoding, you will only see 'this is a test </p>'

That is why you need the extention .php, so the server knows there is some work to do, before the page can be submitted to the browser.

Javascript in the other hands, works on your own machine. so javascript can be seen in your source

edit: i should type faster 😛

Htmlwiz

lol