How to differentiate between http and cli requests?

Question

The title is quiet straightforward. I have to know on server side if the script called through HTTP request or by command line. I could examine the $_SERVER['argv'] or $_SERVER['argc'].
What is the pragmatic way to do that?

Answer 1

http://us3.php.net/manual/en/function.php-sapi-name.php

<?php
echo PHP_SAPI;
echo php_sapi_name();
?>

Answer 2

Look at the keys in $_SERVER. If it is a cli request, you shouldn't see any that start with "HTTP".

---

Here is some simple test code:

<?php

foreach( $_SERVER as $k=>$v ){
    echo "$k: $v\n";
}

?>

And here is the output:

aj@mmdev0:~/so$ php cli.php |grep HTTP
aj@mmdev0:~/so$

Answer 3

Possibly checking if no $_SERVER['HTTP_HOST'] is set? Because I believe that variable is populated through the Request Headers sent to a file on exection, and the command line probably doesn't send headers.

Answer 4

You can check if the global variable $argc is set.

Answer 5

I suggest checking if(isset($_SERVER['SERVER_NAME']))

Answer 6

But you have to send the data through http (tcp) anyway no matter if the script is called from cli or from a browser