greeting.php

<?php
function main(array $args) : array
{
    $name = $args['name'] ?? 'stranger';
    $greeting = 'Hello '.$name.'!';

    return [
        'statusCode' => 201,
        'headers' => [
            'X-Header-Test' => 'Something shiny',
        ],
        'body' => [
          'input' => $args,
          'greeting' => $greeting
        ]
    ];
}

function other(array $args) : array
{
    $name = $args['name'] ?? 'stranger';
    $greeting = 'Hello other '.$name.'!';

    return [
        'statusCode' => 200,
        'body' => [
          'input' => $args,
          'greeting' => $greeting
        ]
    ];
}


# Upload with:
# wsk action create greeting greeting.php --web true