Script running under Command Prompt or Browser or some otherapplicatio n?

[Ojas]

Hi!,

I just out of curiosity want to know how top detect the client side
application under which the script is getting run. I mean to ask the
how to know whether the script is running under Command Prompt or
Browser or some other application?

Ojas.

[NC]

On Nov 27, 9:34 pm, Ojas <contacto...@gm ail.comwrote:

>
I just out of curiosity want to know how top detect
the client side application under which the script
is getting run. I mean to ask the how to know whether
the script is running under Command Prompt or Browser
or some other application?

This is not exactly possible. What is possible is knowing which PHP
interpreter (server module, CGI, command line, etc.) is processing the
current script:

http://www.php.net/manual/en/function.php-sapi-name.php

As to the client-side application requesting the script, the client is
under no obligation to identify itself. If it does identify itself
(by sending a "User-Agent:" request header), data sent in that header
are made available to the script as $_SERVER["HTTP_USER_AGEN T"].

Cheers,
NC

[Kailash Nadh]

On Nov 28, 5:34 am, Ojas <contacto...@gm ail.comwrote:

Hi!,

I just out of curiosity want to know how top detect the client side
application under which the script is getting run. I mean to ask the
how to know whether the script is running under Command Prompt or
Browser or some other application?

Ojas.

Yep, when a php script is run from the commandline, the two variables
$argc and $argv (commandline arguments) are registered.
They might be empty, but they still would be registered when being run
from the commandline (and not when not in the commandline)
http://uk.php.net/features.commandline

--
Kailash Nadh | http://kailashnadh.name

[Jerry Stuckle]

Kailash Nadh wrote:

On Nov 28, 5:34 am, Ojas <contacto...@gm ail.comwrote:

>Hi!,

I just out of curiosity want to know how top detect the client side
application under which the script is getting run. I mean to ask the
how to know whether the script is running under Command Prompt or
Browser or some other application?

Ojas.

Yep, when a php script is run from the commandline, the two variables
$argc and $argv (commandline arguments) are registered.
They might be empty, but they still would be registered when being run
from the commandline (and not when not in the commandline)
http://uk.php.net/features.commandline

--
Kailash Nadh | http://kailashnadh.name

But that's server side. He asked about client side. And the answer is
there is no good way.
--
=============== ===
Remove the "x" from my email address
Jerry Stuckle
JDS Computer Training Corp.
js*******@attgl obal.net
=============== ===

[Ojas]

On Nov 28, 11:26 pm, Jerry Stuckle <jstuck...@attg lobal.netwrote:

Kailash Nadh wrote:

On Nov 28, 5:34 am, Ojas <contacto...@gm ail.comwrote:

Hi!,

I just out of curiosity want to know how top detect the client side
application under which the script is getting run. I mean to ask the
how to know whether the script is running under Command Prompt or
Browser or some other application?

Ojas.

Yep, when a php script is run from the commandline, the two variables
$argc and $argv (commandline arguments) are registered.
They might be empty, but they still would be registered when being run
from the commandline (and not when not in the commandline)
http://uk.php.net/features.commandline

--
Kailash Nadh |http://kailashnadh.name

But that's server side. He asked about client side. And the answer is
there is no good way.

--
=============== ===
Remove the "x" from my email address
Jerry Stuckle
JDS Computer Training Corp.
jstuck...@attgl obal.net
=============== ===

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!!

Ojas

[Bruno Rafael Moreira de Barros]

>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?

[Jerry Stuckle]

Ojas wrote:

On Nov 28, 11:26 pm, Jerry Stuckle <jstuck...@attg lobal.netwrote:

>Kailash Nadh wrote:

>>On Nov 28, 5:34 am, Ojas <contacto...@gm ail.comwrote:
Hi!,
I just out of curiosity want to know how top detect the client side
applicatio n under which the script is getting run. I mean to ask the
how to know whether the script is running under Command Prompt or
Browser or some other application?
Ojas.
Yep, when a php script is run from the commandline, the two variables
$argc and $argv (commandline arguments) are registered.
They might be empty, but they still would be registered when being run
from the commandline (and not when not in the commandline)
http://uk.php.net/features.commandline
--
Kailash Nadh |http://kailashnadh.name

But that's server side. He asked about client side. And the answer is
there is no good way.

--
============== ====
Remove the "x" from my email address
Jerry Stuckle
JDS Computer Training Corp.
jstuck...@attg lobal.net
============== ====

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!!

Ojas

Sorry - knowing what's running on the client side depends on the client
telling you. And that's not reliable.

--
=============== ===
Remove the "x" from my email address
Jerry Stuckle
JDS Computer Training Corp.
js*******@attgl obal.net
=============== ===

[Captain Paralytic]

On 29 Nov, 11:51, Bruno Rafael Moreira de Barros
<brunormbar...@ gmail.comwrote:

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?

"if its not run on a known browser" and I say again, a browser does
not run a php script. A script will never be run on a browser.

[Ojas]

On Nov 29, 4:51 pm, Bruno Rafael Moreira de Barros
<brunormbar...@ gmail.comwrote:

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.)

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.

[Jerry Stuckle]

Ojas wrote:

On Nov 29, 4:51 pm, Bruno Rafael Moreira de Barros
<brunormbar...@ gmail.comwrote:

>>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_exist s(), for instance.

--
=============== ===
Remove the "x" from my email address
Jerry Stuckle
JDS Computer Training Corp.
js*******@attgl obal.net
=============== ===