<?php

/**

* Limits output of command-line options for routine automation.

*

* This script takes command-line arguments and filters the output

* based on a set of predefined options.

*/

/**

* Processes command-line arguments.

*

* @param array $argv The command-line arguments.

* @param array $allowed_options An array of allowed options.

* @return array An array of filtered arguments.

*/

function process_arguments(array $argv, array $allowed_options): array

{

$filtered_args = [];

$allowed_option_sets = [];

//Define allowed option combinations

$allowed_option_sets = [

'all' => [], //allow everything

'basic' => ['a', 'b'], //allow 'a' and 'b'

'verbose' => ['v', 'a'], //allow 'v' and 'a'

];

// Check if any arguments are provided

if (count($argv) > 1) {

//Iterate through command line arguments.

for ($i = 1; $i < count($argv); $i++) {

$arg = $argv[$i];

//Check if the argument is in allowed set.

if (in_array($arg, $allowed_options)) {

$filtered_args[] = $arg;

}

}

}

//Filter based on allowed options combinations

if(isset($allowed_option_sets[$allowed_option_sets['all']])){

$filtered_args = $allowed_option_sets['all'];

} elseif (isset($allowed_option_sets[$allowed_option_sets['basic']])) {

$filtered_args = $allowed_option_sets['basic'];

} elseif (isset($allowed_option_sets[$allowed_option_sets['verbose']])){

$filtered_args = $allowed_option_sets['verbose'];

}

return $filtered_args;

}

// Main execution

$arguments = $argv; //Get command line arguments

//Define allowed options

$allowed_options = ['a', 'b', 'v', 'c'];

//Process arguments

$filtered_arguments = process_arguments($arguments, $allowed_options);

//Output filtered arguments

echo "<pre>";

print_r($filtered_arguments);

echo "</pre>";

?>