Simple issue

[amam]

Hello,

 

I don't have any php knowledge and am having a hard time trying to implement the following:

 

- a drupal node is getting a numeric parameter with the URL in the following form "http://the.url/?X=123"

- what I want is for the script to check if the value has been passed with the URL, then use it in a form... if the entered URL was "http://the.url" without the X variable, then use a default value of 321.

 

<?php $_GET['X']; if (isset($X)) { print $X ; } else print "321" ?>

 

Thanks in advance for your help.

[pagegen]

<?php $X = $_GET['X']; if (isset($X)) { print $X ; } else print "321" ?>

[amam]

Thank you pagegen, I did imagine that there's something really simple with this sting of code, but you defenitely saved me a lot of time.

 

Can anyone advise if using such code is safe, or should the value be checked if it's actually an integer first?

[pagegen]

I usuly use

mysql_escape_string($_GET['']);

to add slashes

 

but there are lots of ways to make string safe

 

you will need

 

is_numeric($X);

 

so u can try

 

if(is_numeric($X)){

echo "its a number";

} else {

echo "not a number";

}

 

I think safty is allways 1st so yes validation is allways a good thing

[amam]

Thank you mate, you've been a great help.

 

Got it working, and got a little bit of new knowledge! 

[pagegen]

These sites might help u also mate

http://www.w3schools.com/php/default.asp

 

http://php.net/manual/en/ -- < I mostly use that to learn php built in functions i.e. is_numeric()