vijinho/moon

CLI script/web API to show lunar phase information

# moon - A command-line php for the Moon Phase

CLI script moon.php instantiates class solarissmoke/php-moon-phase and echoes JSON if successful

The script can also be run as a web-service with PHP's in-built webserver for testing the JSON request/responses.

NOTE: Originally this script called the burning soul REST API to get the data, that previous code is on this branch: https://github.com/vijinho/moon/tree/burningsoul

Features

• Runs on the command-line
• Can be called as a stand-alone webservice using the php command line built-in server
• All messages when running with --debug or --verbose are to stderr to avoid interference with stdout
• Can output the result if successful to stdout
• Specify date-format using php date()
• Errors are output in JSON as 'errors' with just a bunch of strings

{
    "errors": [
        "Unable to parse --date: next sunsaday"
    ]
}

## Returned results fields/columns/keys

• phase: the terminator phase angle as a fraction of a full circle (i.e., 0 to 1). Both 0 and 1 correspond to a New Moon, and 0.5 corresponds to a Full Moon.
• illumination: the illuminated fraction of the Moon (0 = New, 1 = Full).
• age_days: the age of the Moon, in days.
• distance_km: the distance of the Moon from the centre of the Earth (kilometres).
• diameter: the angular diameter subtended by the Moon as seen by an observer at the centre of the Earth (degrees).
• sun_distance_km: the distance to the Sun (kilometres).
• sun_diameter: the angular diameter subtended by the Sun as seen by an observer at the centre of the Earth (degrees).
• new_moon: the time of the last New Moon (UNIX timestamp).
• next_new_moon: the time of the next New Moon (UNIX timestamp).
• full_moon: the time of the Full Moon in the current lunar cycle (UNIX timestamp).
• next_full_moon: the time of the next Full Moon in the current lunar cycle (UNIX timestamp).
• first_quarter: the time of the first quarter in the current lunar cycle (UNIX timestamp).
• next_first_quarter: the time of the next first quarter in the current lunar cycle (UNIX timestamp).
• last_quarter: the time of the last quarter in the current lunar cycle (UNIX timestamp).
• next_last_quarter: the time of the next last quarter in the current lunar cycle (UNIX timestamp).
• phase_name: the phase name.
• stage: the phase waxing/waning

Instructions

Command-line options

Usage: php moon.php
Get the moon phase data using class https://github.com/solarissmoke/php-moon-phase
(Specifying any other unknown argument options will be ignored.)

        -h,  --help                   Display this help and exit
        -v,  --verbose                Run in verbose mode
        -d,  --debug                  Run in debug mode (implies also -v, --verbose)
        -r,  --round                  (Optional) Round returned esults
        -t   --date={now}             (Optional) Date/time default 'now' see: https://secure.php.net/manual/en/function.strtotime.php
             --date-format={U}        (Optional) Format to output, using date(), default unixtime, see: https://secure.php.net/manual/en/function.date.php

### Requirements/Installation

• PHP7
• composer: run composer install to install dependency solarissmoke/php-moon-phase

Testing Example

Run the following to run the test and view in 'less' text viewer:

php moon.php --debug 2>&1 | less

[D 1/1] OPTIONS:
Array
(
    [debug] => 1
    [round] => 0
    [verbose] => 1
)
{
    "timestamp": 0,
    "datestamp": "Thu, 01 Jan 1970 00:00:00 +0000",
    "phase": 0.752075462874,
    "illumination": 0.493479925882,
    "age_days": 22.2092311504,
    "distance_km": 391227.193148,
    "diameter": 0.509060110309,
    "sundistance_km": 147099708.642,
    "sundiameter": 0.542184276533,
    "new_moon_last": -1952337.60241,
    "new_moon_next": 592540.734328,
    "full_moon": -714314.659417,
    "full_moon_next": 1860925.62916,
    "first_quarter": -1378241.1266,
    "first_quarter_next": 1171091.16973,
    "last_quarter": -4036.1356616,
    "last_quarter_next": 2558339.3858,
    "phase_name": "Third Quarter",
    "stage": "waning"
}[D 1/1] Memory used (1/1) MB (current/peak).

with rounding '-r'

{
    "timestamp": 0,
    "datestamp": "Thu, 01 Jan 1970 00:00:00 +0000",
    "phase": 0.752,
    "illumination": 0.493,
    "age_days": 22.209,
    "distance_km": 391228,
    "diameter": 0.509,
    "sundistance_km": 147099709,
    "sundiameter": 0.542,
    "new_moon_last": -1952338,
    "new_moon_next": 592541,
    "full_moon": -714315,
    "full_moon_next": 1860926,
    "first_quarter": -1378241,
    "first_quarter_next": 1171091,
    "last_quarter": -4036,
    "last_quarter_next": 2558339,
    "phase_name": 0,
    "stage": "waning"
}

Save to file example

php moon.php --date='next year' > test.json

Running as a webservice

### Starting the service

1. Start the PHP webserver with php -S 127.0.0.1:12312
2. Browse the URL: http://127.0.0.1:12312/moon.php with GET/POST parameters as 'date=' and 'round' for rounding or no param for NOW.

Webservice Example

Search for moon phase 'next sunday' with rounding:

http://127.0.0.1:12312/moon.php?date=next%20sunday&round

Result:

{
    "timestamp": 1540080000,
    "datestamp": "Sun, 21 Oct 2018 00:00:00 +0000",
    "phase": 0.379,
    "illumination": 0.862,
    "age_days": 11.191,
    "distance_km": 400971,
    "diameter": 0.497,
    "sundistance_km": 148914125,
    "sundiameter": 0.536,
    "new_moon_last": 1539056870,
    "new_moon_next": 1541606572,
    "full_moon": 1540399654,
    "full_moon_next": 1542951687,
    "first_quarter": 1539712949,
    "first_quarter_next": 1542293669,
    "last_quarter": 1541004147,
    "last_quarter_next": 1543537278,
    "phase_name": 0,
    "stage": "waxing"
}

---

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