[RESOLVED] arithmetic operators in a hyperlink

[cbesh2]

Can you perform arithmetic operators in a hyperlink using PHP? I'm trying to create a NEXT link to will increment my variable by +1 but am having problems with the syntax. Can anybody help please?

My code is:

echo "<a href='imageonly.php?portid='.$port_id+1.'>NEXT</a>";

and

$query = "select * from table where portid = ".$_GET['portid']; 

Thanks for your help.

[bpat1434]

++$port_id
that's the syntax you want....

echo "<a href='imageonly.php?portid=" . ++$port_id . "'>NEXT</a>";

Also, note that your query is vulnerable to SQL injection and you should take measures to prevent that by building your query with [man]sprintf[/man] and casting your inputs as specific types of values (integer, string, boolean).

[Weedpacket]

Or at least

echo "<a href='imageonly.php?portid=".($port_id+1).">NEXT</a>";

[cbesh2]

Great! Thank you for the tips.