Notice: Undefined index: ALL_HTTP

[jrahma]

Hi,

I am getting the following error:

Notice: Undefined index: ALL_HTTP in C:\xampp\htdocs\JassimRahma\app\detect.php on line 118

here is the code:

if(in_array($mobile_ua,$mobile_agents)){
    $mobile_browser++;
    }
if (strpos(strtolower($_SERVER['ALL_HTTP']),'OperaMini')>0) {
    $mobile_browser++;
    }
		if (strpos(strtolower($_SERVER['HTTP_USER_AGENT']),'iemobile')>0) {
$mobile_browser++;
}
if (strpos(strtolower($_SERVER['HTTP_USER_AGENT']),'windows')>0) {
    $mobile_browser=0;
    }

Line 118 is:

if (strpos(strtolower($_SERVER['ALL_HTTP']),'OperaMini')>0) {

Kindly help...

[Weedpacket]

ALL_HTTP isn't listed as one of the elements available in the [font=monospace]$SERVER[/font] array. Why are you using it there when you are using [font=monospace]$SERVER['HTTP_USER_AGENT'][/font] everywhere else?

[sneakyimp]

The Undefined index error happens when your code tries to reference a member of any array that has not been defined. As Weedpacket points out, this is not one of the usual elements defined in $_SERVER. In my experience, it's usually a good idea to check if an array element exists before you try and reference it. You can use [man]isset[/man] or [man]array_key_exists[/man] to do this. I have found that a handy solution when trying to get values from an array is to define a function which returns the value if it's defined or NULL if it is not defined.