To find out are you in CLI or not, this is much better in my opinion:
<?php
if (PHP_SAPI != "cli") {
exit;
}
?>
(PHP 4, PHP 5, PHP 7)
$argc — The number of arguments passed to script
Contains the number of arguments passed to the current script when running from the command line.
Note: The script's filename is always passed as an argument to the script, therefore the minimum value of $argc is 1.
Note: This variable is not available when register_argc_argv is disabled.
Example #1 $argc example
<?php
var_dump($argc);
?>
When executing the example with: php script.php arg1 arg2 arg3
The above example will output something similar to:
int(4)
To find out are you in CLI or not, this is much better in my opinion:
<?php
if (PHP_SAPI != "cli") {
exit;
}
?>
To decide whether my script is run from CLI I simply create a PHP script that handles only CLI invocations.
File cron.php:
<?php
// Set environment variables your application depends on
$_SERVER[ 'HTTP_HOST' ] = 'domain.tld';
// $_SERVER[ 'REQUEST_URI' ] = '/some/URI/if/needed';
// Use the environment to read out required values
$task = $_SERVER[ 'argv' ][ 1 ];
// Instanciate the dispatcher or whatever you use
$dispatcher = new Dispatcher();
$dispatcher->handle( $task );
?>
This way my application doesn't have to know about CLI at all.
I use the following lines to check if i'm using CLI mode or not :
<?php
$cli_mode = false;
if ( isset($_SERVER['argc']) && $_SERVER['argc']>=1 ) {
$cli_mode = true;
}
?>
Note: when using CLI $argc (as well as $argv) are always available, regardless of register_argc_argv, as explained at http://docs.php.net/manual/en/features.commandline.php