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Posted by Jerry Stuckle on 12/05/07 11:56
Ojas wrote:
> On Nov 29, 4:51 pm, Bruno Rafael Moreira de Barros
> <brunormbar...@gmail.com> wrote:
>>> Thanks to all of you for replying but i still think there should be a
>>> way to know that. Actually someone may have to implement a check on
>>> the basis of that. Unavailability of the functionality can break the
>>> logic!!
>> Not wanting to be pessimistic or contraditory, I think what he meant
>> was how to find a way to know which application executed the request.
>>
>> If you open a request to a PHP script from another PHP script, there
>> will be a PHP user agent (dont know its name from my head), whilst on
>> a browser, the browsers details will be sent. Lets just say with PHP,
>> you can check if its command line by checking IF $argc and $argv
>> exist, to check if its a browser, compare it to a list of known
>> browsers (PHP.net has one huge file for that) and if its not run on
>> command line, if its not run on a known browser, then it can only be
>> another application.
>>
>> Is that what you were looking to know, Ojas?
>
> You are right Bruno Rafael. I am willing to know the type of
> application sending request to the server to run a PHP script (i think
> it should be clear to all other ones that i am not asking for how
> script will run on client side.)
>
PHP scripts do not run on the client side.
> As you have specified, if the request has been sent through command
> line, $argc & $arv will exists whether having any values or not but
> since we can access these values from $_SERVER (or $_ENV not sure
> about it) which itself is an array, not set $_SERVER['argc'] is
> equivalent to null $_SERVER['argc'], accessing the $_SERVER['argc']
> will result to null values in both cases, then how one can distinguish
> these cases?
>
> Ojas.
>
As he said - if it is from the command line, $argc and $argv will exist,
as will $_SERVER['argc'] and $_SERVER['argv']. But you shouldn't be
even trying to access them unless you know they exist - they will give a
NOTICE if you have errors enabled and displayed (which you should in a
development environment).
Check out isset() and array_key_exists(), for instance.
--
==================
Remove the "x" from my email address
Jerry Stuckle
JDS Computer Training Corp.
jstucklex@attglobal.net
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