PHP get url PARAMETER into form

If i have form where i have a value like this value=""

so there is no value

i need to get the "3435435" value from the url like below.
http://www.somesite.com/blahblah&_moon=3435435

then add it into the FORM value so when the form submits its like this

value="3435435"

any ideas?

 

Not sure i follow but i think you want to grab the value form the address bar?

no probs, you would use a $_GET like so:

www.somesite.com/example_id=123&another_example_id=456

PHP:

on the page just do:

$id_1 = $_GET['example_id'];
$id_2 = $_GET['another_example_id'];

// testing we caught the ids //
print("The example id: $id_1 and the another example id is: $id_2");

PHP:

thats the basics of it, there more secure ways to do the above though, hope thats a help to you.

Graham

 

In the actual code it would be:

value="<?=$_GET['_moon'];?>"

PHP:

However, in that state it's vulnerable to Cross Site Scripting (XSS) so I'd recommend outputting the variable through htmlspecialchars() .

 

Within the <form> tag in your HTML code, insert:

<input type="hidden" name="userid" id="userid" value="3434">

Code (markup):

And then in the PHP code, you get the value:

echo $_POST['userid']/$_GET['userid'];
//Depending on form type

PHP:

Peace,

 

Yes but _moon=34433

is on a different url from the FORM

 

Did you mean,
the user will input an URL (for example "http://www.somesite.com/blahblah&_moon=3435435") to your form,
and your script should print "3435435" ?

 

Nope theres a url "http://www.somesite.com/blahblah&_moon=343543" that always has _moon value with a different location to the FORM

 

I dont understand what you want. the solution posted by Randombase is close, although I would do this:

use htmlentities else your conna get some XSS attacks going on.

 

ok your saying get _moon, that would get _moon from the current url

i need it from a different url that the form is on

 

$url = 'http://www.somesite.com/blahblah&_moon=3435435';

$QUERYVAR= parse_url($url, PHP_URL_QUERY);

$GETVARS = explode('&',$QUERYVAR);

foreach($GETVARS as $string){
     list($is,$what) = explode('=',$string);
     echo "$is -> $what<br/>";
}

PHP:

Peace,