<?php
/*
###########################################################################
DUAL-DATE NASA/JPL HORIZONS GEOCENTRIC INPUT TEMPLATE - WITH 30-DAY COOKIE.
All the rules that apply to the Horizons app also apply to this template.
https://ssd.jpl.nasa.gov/horizons/app.html
AUTHOR : Jay Tanner - 2026
LANGUAGE : PHP v8.2.12
LICENSE : Public Domain
This interface template is for operations that require two date arguments.
More arguments could be added for future interface expansions.
It can be used as a base template upon which to build an ephemeris program.
This version does not require location coordinates, so it is ideal for the
making of geocentric ephemerides.
The default settings are for a basic geocentric Mars ephemeris. You can
replace this demo/example code with your own custom ephemeris code.
INTERFACE
Body ID The JPL database ID# or code for the body.
Quantities List Numerical codes for the requested quantities.
Optional Location Label This can be any text lable used for reference.
Base Time Scale UT (Default) or TT
Time Zone Offset from UT -Negative = West / +Positive = East
Day/Sum Time Yes|No No = Standard Time / Yes = Daylight/Summer Time
Start Date/Time Ephemeris starting date and time.
Stop Date/Time Ephemeris ending date and time.
Ephemeris Step Size Time interval used for the ephemeris table.
NOTE: The Daylight Saving / Summer Time option will have to be handled by
extended code within the calling function by adding the extra hour
internally, if indicated.
###########################################################################
*/
ob_start(); // Oy!
// ---------------------------------------------------------------
// Define the program cookie name and set it to expire in 30 days.
// This can be changed to any valid name (no spaces).
$CookieName = 'DUAL-DATE-GEOCENTRIC-INPUT-TEMPLATE';
$SetToExpireIn30Days = time() + 30*86400;
// ------------------------------------------------------------------
// Define JavaScript message to display in (TextArea1) while working.
$_COMPUTING_ = "TextArea1.innerHTML='W.O.R.K.I.N.G --- This may take a few seconds.';";
// ---------------------------------
// Define PHP program and HTML info.
$_AUTHOR_ = 'Kilroy of Null Island';
$_PROGRAM_VERSION_ = 'v1.00 - '; $at = "at Time "; $LTC = "UTC";
$_SCRIPT_FILE_PATH_ = Filter_Input(INPUT_SERVER, 'SCRIPT_FILENAME');
$_REVISION_DATE_ = $_PROGRAM_VERSION_ .'Revised: '. GMDate("Y-F-d-l $at H:i:s ($LTC", FileMTime($_SCRIPT_FILE_PATH_)).")";
$_BROWSER_TAB_TEXT_ = "DUAL DATE GEOCENTRIC INPUT TEMPLATE";
$_INTERFACE_TITLE_ = "<span style='font-size:15pt;'>DUAL DATE GEOCENTRIC INPUT TEMPLATE</span><br><span style='font-size:12pt;'>Built Around The NASA/JPL Horizons API</span><br><span style='font-size:10pt;'>PHP Program by $_AUTHOR_</span>";
/* ----------------------------------------
Define main TextArea text and background
colors and HTML table row span. If an
error is reported, then these colors
will change internally to red/white.
*/
$TxColor = 'black';
$BgColor = 'white';
/* -----------------------------------
Define number of days in each month
for use with calendar computations.
*/
define('MONTHDAYS', '312831303130313130313031');
/* ----------------------------------------
Define 3-letter month name abbreviations
for use with calendar computations.
*/
define('MONTHS', 'JanFebMarAprMayJunJulAugSepOctNovDec');
/* ------------------------------------------
Define 3-letter weekday name abbreviations
for use with calendar computations.
*/
define('DOWs', 'SunMonTueWedThuFriSat');
// ---------------------------------------------
// Do this only if [SUBMIT] button was clicked.
$w = Filter_Input(INPUT_POST, 'SubmitButton');
if (!IsSet($w))
{
/* ----------------------------------------------------------------------
If this program is being called externally, rather than being executed
by clicking the [SUBMIT] button, and an active cookie also exists,
then restore the previously saved interface settings from it. If
the user leaves and comes back later, all the interface settings
will be remembered and restored if the cookie was not deleted.
*/
$w = Filter_Input(INPUT_COOKIE, $CookieName);
if (IsSet($w))
{
$CookieDataString = Filter_Input(INPUT_COOKIE, $CookieName);
list
(
$BodyID,
$TimeScale,
$StartBCAD,
$StartYear,
$StartMonth,
$StartDay,
$StartTime,
$TimeZone,
$StopBCAD,
$StopYear,
$StopMonth,
$StopDay,
$StopTime,
$DaySumYN,
$StepSize,
$LocLabel,
$Quantities
) = Preg_Split("[\|]", $CookieDataString);
}
else
/* -----------------------------------------------------------
If there is no previous cookie with the interface settings,
then set the initial default interface startup values and
store them in a new cookie.
*/
{
$BodyID = '499';
$TimeScale = 'UT';
$StartBCAD = 'AD';
$StartYear = date('Y');
$StartMonth = date('M');
$StartDay = date('d');
$StartTime = '00:00:00';
$TimeZone = '+00:00'; // -Negative = West
$DaySumYN = 'No';
$StopBCAD = 'AD';
$StopYear = date('Y');
$StopMonth = date('M');
$StopDay = date('d');
$StopTime = '23:00:01';
$StepSize = '1 hour';
$LocLabel = '---';
$Quantities = '1,20,9';
// -------------------------------------------
// Store current interface settings in cookie.
$CookieDataString = "$BodyID|$TimeScale|$StartBCAD|$StartYear|$StartMonth|$StartDay|$StartTime|$TimeZone|$StopBCAD|$StopYear|$StopMonth|$StopDay|$StopTime|$DaySumYN|$StepSize|$LocLabel|$Quantities";
SetCookie ($CookieName, $CookieDataString, $SetToExpireIn30Days);
} // End of else {...}
} // End of if (!isset(_POST['SubmitButton']))
// ------------------------------------------
// Read values of all interface arguments and
// set any empty arguments to default values.
$w = Filter_Input(INPUT_POST, 'SubmitButton');
if (isset($w))
{
$BodyID = trim(Filter_Input(INPUT_POST, 'BodyID'));
if ($BodyID == '') {$BodyID = '499';}
$TimeScale = StrToUpper(trim(Filter_Input(INPUT_POST, 'TimeScale')));
if ($TimeScale == '') {$TimeScale = 'UT';}
$TimeScale = (substr($TimeScale, 0,1) == 'T')? 'TT' : 'UT';
$StartBCAD = trim(Filter_Input(INPUT_POST, 'StartBCAD'));
if ($StartBCAD == '') {$StartBCAD = 'AD';}
$StartYear = trim(Filter_Input(INPUT_POST, 'StartYear'));
if ($StartYear == '') {$StartYear = date('Y');}
$StartYear = SPrintF("%04d", $StartYear);
/* -------------------------------------------
Get START month as a number (1 to 12) or as
a 3-letter abbreviation ('Jan' to 'Dec').
NOT case-sensitive.
*/
$StartMonth = UCFirst(substr(StrToLower(trim(Filter_Input(INPUT_POST, 'StartMonth'))),0,3));
if ($StartMonth == '') {$StartMonth = date('M');}
if (Is_Numeric($StartMonth) and $StartMonth == 0) {$StartMonth = 'Jan';}
for ($ii=0; $ii < 1; $ii++)
{
if (Is_Numeric($StartMonth))
{
$m = IntVal($StartMonth);
if ($m < 0 or $m > 12) {$StartMonth = 0; break;}
$StartMonth = substr(MONTHS, 3*($m-1), 3);
}
$jj = StrPos(MONTHS, $StartMonth);
if ($jj === FALSE) {$StartMonth = 0; break;}
$StartMonth = substr(MONTHS, $jj, 3);
}
$StartDay = trim(Filter_Input(INPUT_POST, 'StartDay'));
if ($StartDay == '') {$StartDay = IntVal(date('d'));}
$StartDay = SPrintF("%02d", $StartDay);
$StartTime = trim(Filter_Input(INPUT_POST, 'StartTime'));
if ($StartTime == '') {$StartTime = date('H:i:s');}
$StartTime = (!Is_Numeric(substr($StartTime,0,1)))? '00:00:00': $StartTime;
$w = HMS_to_Hours($StartTime);
$StartTime = Hours_to_HMS($w,0);
$TimeZone = trim(Filter_Input(INPUT_POST, 'TimeZone'));
if ($TimeZone == '') {$TimeZone = '+00:00';}
$TZHours = @HMS_to_Hours($TimeZone); // suppress a harmless warning.
$TimeZone = Hours_to_HMS($TZHours);
$TZSign = ($TZHours >= 0)? '+':'';
$TimeZone = substr($TZSign.$TimeZone,0,6);
$DaySumYN = trim(Filter_Input(INPUT_POST, 'DaySumYN'));
$DaySumYN = (substr(StrToUpper($DaySumYN),0,1) == 'Y')? 'Yes':'No';
$StopBCAD = trim(Filter_Input(INPUT_POST, 'StopBCAD'));
if ($StopBCAD == '') {$StopBCAD = 'AD';}
$StopYear = trim(Filter_Input(INPUT_POST, 'StopYear'));
if ($StopYear == '') {$StopYear = date('Y');}
$StopYear = SPrintF("%04d", $StopYear);
/* ------------------------------------------
Get STOP month as a number (1 to 12) or as
a 3-letter abbreviation ('Jan' to 'Dec').
*/
$StopMonth = UCFirst(substr(StrToLower(trim(Filter_Input(INPUT_POST, 'StopMonth'))),0,3));
if ($StopMonth == '') {$StopMonth = date('M');}
if (Is_Numeric($StopMonth) and $StopMonth == 0) {$StopMonth = 'Dec';}
for ($ii=0; $ii < 1; $ii++)
{
if (Is_Numeric($StopMonth))
{
$m = IntVal($StopMonth);
if ($m < 0 or $m > 12) {$StopMonth = 0; break;}
$StopMonth = substr(MONTHS, 3*($m-1), 3);
}
$jj = StrPos(MONTHS, $StopMonth);
if ($jj === FALSE) {$StopMonth = 0; break;}
$StopMonth = substr(MONTHS, $jj, 3);
}
$StopDay = trim(Filter_Input(INPUT_POST, 'StopDay'));
if ($StopDay == '') {$StopDay = IntVal(date('d'));}
$StopDay = SPrintF("%02d", $StopDay);
$StopTime = trim(Filter_Input(INPUT_POST, 'StopTime'));
if ($StopTime == '') {$StopTime = date('H:i:s');}
$StopTime = (!Is_Numeric(substr($StopTime,0,1)))? '00:00:00': $StopTime;
$w = HMS_to_Hours($StopTime);
$StopTime = Hours_to_HMS(HMS_to_Hours($w), 0);
$StepSize = trim(Filter_Input(INPUT_POST, 'StepSize'));
if ($StepSize == '') {$StepSize = '1 hour';}
$StepSize .= (Is_Numeric($StepSize))? ' hour' : '';
$LocLabel = trim(Filter_Input(INPUT_POST, 'LocLabel'));
if ($LocLabel == '') {$LocLabel = '---';}
$Quantities = trim(Filter_Input(INPUT_POST, 'Quantities'));
if ($Quantities == '') {$Quantities = '1,20,9';}
// -------------------------------------
// Store interface argument in a cookie.
$CookieDataString = "$BodyID|$TimeScale|$StartBCAD|$StartYear|$StartMonth|$StartDay|$StartTime|$TimeZone|$StopBCAD|$StopYear|$StopMonth|$StopDay|$StopTime|$DaySumYN|$StepSize|$LocLabel|$Quantities";
SetCookie ($CookieName, $CookieDataString, $SetToExpireIn30Days);
}
/* -----------------------------------------------------------
Put code here to optionally check individual arguments for
validity in reverse input order. If errors found, then set
error flag and message values accordingly.
NOTE: Horizons will catch some errors, such as invalid date
errors.
*/
$ErrorReported = FALSE;
$ErrMssg = '';
// -----------------------------
// Set initial uniform width for
// tables alignment in pixels.
$TableWidth = '780';
// -------------------------------------------
// If error was reported (TRUE), then display
// the error message on a red background.
if ($ErrorReported)
{
$TxColor = 'white';
$BgColor = '#CC0000';
$TextArea2Text = '';
$TextArea1Text =
"=== ERROR ===
$ErrMssg";
}
else
{
// *********************************************************
// BEGIN MAIN COMPUTATIONS HERE IF NO ERRORS DETECTED ABOVE.
// *********************************************************
/* ------------------------------------------------------
Construct full date and time strings for Horizons API.
*/
$StartDateTime = "$StartBCAD $StartYear-$StartMonth-$StartDay $StartTime $TimeScale";
$StopDateTime = "$StopBCAD $StopYear-$StopMonth-$StopDay $StopTime";
/* -------------------
Call main function.
Replace with your own custom function.
*/
$EphemerisTable = Geocentric_Ephem ($BodyID, $StartDateTime, $StopDateTime,
$TimeZone, $StepSize, $Quantities);
// ********************************************
// DROP THROUGH HERE AFTER COMPUTATIONS ABOVE
// TO PARSE THE RETURNED EPHEMERIS TABULATIONS.
// ********************************************
$TextArea1Text =
"#############################################################################
MAIN OUTPUT TEXT AREA 1
The results of computations can be printed in this area and/or the optional
second text area below as well.
For JPL Database Body ID = $BodyID
Ephemeris Time Scale = $TimeScale
Local Time Zone Offset = UT$TimeZone (Ignored if using the TT scale.)
Daylight / Summer Time = $DaySumYN
Optional Location Label = $LocLabel
START Era / Date / Time = $StartBCAD $StartYear-$StartMonth-$StartDay $StartTime
STOP Era / Date / Time = $StopBCAD $StopYear-$StopMonth-$StopDay $StopTime
Ephemeris Step Size = $StepSize
******************************************************************************
The basic concept is to design a function to perform a NASA/JPL Horizons API
computation and create a custom interface to call and make use of it.
******************************************************************************
EPHEMERIS OUTPUT
$EphemerisTable
";
}
// ****************************
// Define TextArea2 text block.
$TextArea2Text =
"TEXT AREA 2 = OPTIONAL SECOND TEXT AREA
For optional program info or other use or it can be removed entirely or more
text areas could be added as needed. This text area is independent of the
text area above.
";
/* --------------------------------------------------------------------------
Determine number of text columns and rows to use in the output text areas.
These values vary randomly according to the text block width and length.
The idea is to eliminate the need for scroll-bars within the text areas
or worry as much about the variable dimensions of a text display area.
*/
// --------------------------------------------
// Text Area 1 - Default = At least 80 columns.
$Text1Cols = 1 + Max(Array_Map('StrLen', PReg_Split("[\n]", trim($TextArea1Text))));
if ($Text1Cols < 80) {$Text1Cols = 80;} // Default
$Text1Rows = 2 + Substr_Count($TextArea1Text, "\n");
// --------------------------------------------
// Text Area 2 - Default = At least 80 columns.
$Text2Cols = 1 + Max(Array_Map('StrLen', PReg_Split("[\n]", trim($TextArea2Text))));
if ($Text2Cols < 80) {$Text2Cols = 80;} // Default
$Text2Rows = 2 + Substr_Count($TextArea2Text, "\n");
// ******************************************
// GENERATE CLIENT WEB PAGE TO DISPLAY OUTPUT
print <<< _HTML
<!DOCTYPE HTML>
<HTML>
<head>
<title>$_BROWSER_TAB_TEXT_</title>
<meta name='viewport' content='width=device-width, initial-scale=0.8'>
<meta http-equiv='content-type' content='text/html; chrset=UTF-8'>
<meta http-equiv='pragma' content='no-cache'>
<meta http-equiv='expires' content='-1'>
<meta name='description' content='DUAL DATE INPUT TEMPLATE'>
<meta name='keywords' content='NeoProgrammics / PHP Science Labs'>
<meta name='author' content='Jay Tanner - https://www.NeoProgrammics.com'>
<meta name='robots' content='index,follow'>
<meta name='googlebot' content='index,follow'>
<style>
BODY {color:white; background:black; font-family:Verdana; font-size:12pt; line-height:125%;}
TABLE
{font-size:13pt; border: 1px solid black;}
TD
{
color:black; background:white; line-height:150%; font-size:10pt;
padding:6px; text-align:center;
}
UL
{font-family:Verdana; font-size:12pt; line-height:150%; text-align:justify;}
PRE
{
background:white; color:black; font-family:monospace; font-size:12.5pt;
font-weight:bold; text-align:left; line-height:125%; padding:6px;
border:2px solid black; border-radius:8px;
page-break-before:page;
}
DIV
{
background:white; color:black; font-family:Verdana; font-size:11pt;
font-weight:normal; line-height:125%; padding:6px;
}
TEXTAREA
{
background:white; color:black; font-family:monospace; font-size:12pt;
font-weight:bold; padding:4pt; white-space:pre; border-radius:8px;
line-height:125%;
}
INPUT[type='text']::-ms-clear {width:0; height:0;}
INPUT[type='text']
{
font-family:monospace; color:black; background:white; font-size:12pt;
font-weight:bold; text-align:center; box-shadow:2px 2px 3px #666666;
border:2px solid black; border-radius:4px;
}
INPUT[type='text']:focus
{
font-family:monospace; background:white; box-shadow:2px 2px 3px #666666;
font-size:12pt; border:2px solid blue; text-align:center; font-weight:bold;
border-radius:4px;
}
INPUT[type='submit']
{
background:black; color:cyan; font-family:Verdana; font-size:10pt;
font-weight:bold; border-radius:4px; border:4px solid #777777;
padding:3pt;
}
INPUT[type='submit']:hover
{
background:black; color:white; font-family:Verdana; font-size:10pt;
font-weight:bold; border-radius:4px; border:4px solid red;
padding:3pt;
}
// Link states MUST be set in the following order:
// :link, :visited, :hover, :active
A:link
{
font-size:10pt; background:transparent; color:#8080FF; border-radius:4px;
font-family:Verdana; font-weight:bold; text-decoration:none;
line-height:175%; padding:3px; border:1px solid transparent;
}
A:visited
{
font-size:10pt; background:transparent; color:DarkCyan; border-radius:4px;
}
A:hover
{
font-size:10pt; background:yellow; color:black; border:1px solid black;
box-shadow:1px 1px 3px #222222; border-radius:4px;
}
A:active
{
font-size:10pt; background:yellow; color:black; border-radius:4px;
}
HR {background:red; height:4px; border:0px;}
[title-text]:hover:after
{
opacity:1.0;
transition:all 1.0s ease 1.0s;
text-align:left;
visibility:visible;
}
[title-text]:after
{
opacity:1.0;
content:attr(title-text);
text-align:left;
left:50%;
background-color:yellow;
color:black;
font-size:10pt;
position:absolute;
padding:1px 5px 2px 5px;
white-space:pre;
border:1px solid red;
z-index:1;
visibility:hidden;
}
[title-text] {position: relative;}
::selection{background-color:yellow !important; color:black !important;}
::-moz-selection{background-color:yellow !important; color:black !important;}
</style>
</head>
<body>
<!-- Define container form --->
<form name="form1" method="post" action="">
<!-- Define main page title/header. --->
<table width="$TableWidth" align="center" border="0" cellspacing="1" cellpadding="3">
<tr><td colspan="99" style="color:white; background-color:#000066; border:2px solid white; border-radius:8px 8px 0px 0px;">$_INTERFACE_TITLE_</td></tr>
</table>
<!-- Define input (BodyID) text box --->
<table width="$TableWidth" align="center" border="0" cellspacing="1" cellpadding="3">
<tr>
<td style='line-height:175%; background:LightCyan;' width='25%'
title=' MAJOR BODY IDs
10 = Sun
199 = Mercury
299 = Venus
301 = Moon (Luna)
399 = Earth
499 = Mars
599 = Jupiter
699 = Saturn
799 = Uranus
899 = Neptune
999 = Pluto
ASTEROID IDs
1; = Ceres;
2; = Pallas;
3; = Juno;
4; = Vesta;
5; = Astraea;
6; = Hebe;
7; = Iris;
8; = Flora;
9; = Metis;
10; = Hygiea;
301 = Voyager 1
-32 = Voyager 2
'>NASA/JPL Database Body ID<br>
<input name="BodyID" type="text" value="$BodyID" size="65" maxlength="64"></td>
</tr>
<tr>
<td style='line-height:175%; background:LightYellow;' width='25%'
title=''>Quantities List<br>
<input name="Quantities" type="text" value="$Quantities" size="65" maxlength="64"></td>
</tr>
<tr>
<td style='line-height:175%; background:#CCFFCC;' width='25%'
title=''>Optional Location Label<br>
<input name="LocLabel" type="text" value="$LocLabel" size="65" maxlength="64"></td>
</tr>
</table>
<!-- Define input (TimeScale) text box --->
<table width="$TableWidth" align="center" border="0" cellspacing="1" cellpadding="3">
<tr>
<td style='line-height:175%; background:LightYellow;' width='25%' title=' UT = Universal Time (Default)\n TT = Terrestrial (Dynamical) Time '>Base Time Scale<br><input name="TimeScale" type="text" value="$TimeScale" size="3" maxlength="2"></td>
<td title=' START Date/Time must be EARLIER than STOP Date/Time '><b>START</b> Date and Time<br><input name="StartBCAD" type="text" value="$StartBCAD" size="3" maxlength="2">
<input name="StartYear" type="text" value="$StartYear" size="6" maxlength="5"><input name="StartMonth" type="text" value="$StartMonth" size="4" maxlength="3"><input name="StartDay" type="text" value="$StartDay" size="3" maxlength="2">
<input name="StartTime" type="text" value="$StartTime" size="9" maxlength="8"></td>
<td style='line-height:175%; background:LightYellow;' width='25%' title=' Local Time Zone Offset From UT. \n −Negative = W +Positive = E '>Time Zone<br><input name="TimeZone" type="text" value="$TimeZone" size="7" maxlength="6"></td>
</tr>
<tr>
<td style='line-height:175%; background:LightYellow;' width='25%' title=' N = No = Standard Time (Default) \n Y = Yes = Daylight / Summer Time '>Daylight / Summer Time<br><input name="DaySumYN" type="text" value="$DaySumYN" size="4" maxlength="3">
<td title=' STOP Date/Time must be LATER than START Date/Time '><b>STOP</b> Date and Time<br><input name="StopBCAD" type="text" value="$StopBCAD" size="3" maxlength="2">
<input name="StopYear" type="text" value="$StopYear" size="6" maxlength="5"><input name="StopMonth" type="text" value="$StopMonth" size="4" maxlength="3"><input name="StopDay" type="text" value="$StopDay" size="3" maxlength="2">
<input name="StopTime" type="text" value="$StopTime" size="9" maxlength="8"></td>
<td style='line-height:175%; background:LightYellow;'>Step Size<br><input name="StepSize" type="text" value="$StepSize" size="15" maxlength="14"></td>
</tr>
</table>
<!-- Top yellow source code view link. --->
<br>
<table width="$TableWidth" align="center" cellspacing="1" cellpadding="3">
<tr>
<td colspan="1" style='font-size:10pt; color:black; background:black;
text-align:center;' title=' Tries to Open in a New Tab. '>
<b><a href="View-Source-Code.php" target="_blank"
style='font-family:Verdana; color:black; background:yellow;
text-decoration:none; border:1px solid black; padding:4px;
border-radius:4px; font-weight:normal;'>
View/Copy Source Code </a></b>
</td>
</tr>
</table>
<!-- Define [SUBMIT] button --->
<table width="$TableWidth" align="center" border="0" cellspacing="1" cellpadding="3">
<tr><td colspan="99" style="background-color:black;"><input type="submit" name="SubmitButton" value=" S U B M I T " OnClick="$_COMPUTING_"
></td></tr>
</table>
<!-- Define TextArea1 --->
<table width="$TableWidth" align="center" border="0" cellspacing="1" cellpadding="3">
<tr>
<td colspan="99" style="text-align:center; color:GreenYellow; background-color:black;">Double-Click Within Text Area to Select ALL Text<br>
<textarea ID="TextArea1" name="TextArea1" style="color:$TxColor; background:$BgColor; padding:6px; border:2px solid white;" cols="$Text1Cols" rows="$Text1Rows" ReadOnly OnDblClick="this.select();" OnMouseUp="return true;">
$TextArea1Text
</textarea>
</td>
</tr>
</table>
<!-- Define TextArea2 --->
<table width="$TableWidth" align="center" border="0" cellspacing="1" cellpadding="3">
<tr>
<td colspan="99" style="text-align:center; color:GreenYellow; background:black;">Double-Click Within Text Area to Select ALL Text<br>
<textarea ID="TextArea2" name="TextArea2" style="color:black; background:white; padding:6px;" cols="$Text2Cols" rows="$Text2Rows" ReadOnly OnDblClick="this.select();" OnMouseUp="return true;">
$TextArea2Text
</textarea>
</tr>
</table>
<!-- Define page footer --->
<table width="$TableWidth" align="center" border="0" cellspacing="1" cellpadding="3">
<tr>
<td colspan="99" style="color:GreenYellow; background:black;">PHP Program by $_AUTHOR_<br><span style="color:silver; background:black;">$_REVISION_DATE_</span></td>
</tr>
</table>
</form>
<!-- End of container form --->
<!-- Extra bottom scroll space --->
<br><br><br><br><br><br><br><br><br><br><br><br>
<br><br><br><br><br><br><br><br><br><br><br><br>
</body>
</HTML>
_HTML;
/*
###########################################################################
This function returns the decimal hours equivalent to the given HMS string.
Generic. No special error checking is done.
NO DEPENDENCIES
###########################################################################
*/
function HMS_to_Hours ($HMSString, $Decimals=16)
{
$HHmmss = trim($HMSString);
$decimals = trim($Decimals);
/* ------------------------------------------------
Account for and preserve any numerical +/- sign.
Internal work will use absolute values and any
numerical sign will be reattached the output.
*/
$NumSign = substr($HHmmss,0,1);
if ($NumSign == '-')
{$HHmmss = substr($HHmmss,1,StrLen($HHmmss));}
else
{
if ($NumSign == '+')
{$HHmmss = substr($HHmmss,1,StrLen($HHmmss));}
$NumSign = '+';
}
// ------------------------------------------------------------------
// Replace any colons : with blank spaces and remove any white space.
$HHmmss = PReg_Replace("/\s+/", " ", Str_Replace(":", " ", $HHmmss));
// ----------------------------------------
// Count the HMS time elements from 1 to 3.
$n = 1 + Substr_Count($HHmmss, ' ');
$hh = $mm = $ss = 0;
/* ----------------------------------------------------------------------
Collect all given time element values. They can be integer or decimal
values. Only counts up to three HMS values and any values beyond those
are simply ignored.
*/
for ($i=0; $i < 1; $i++)
{
if ($n == 1){list($hh) = PReg_Split("[ ]", $HHmmss);}
if ($n == 2){list($hh,$mm) = PReg_Split("[ ]", $HHmmss);}
if ($n == 3){list($hh,$mm,$ss) = PReg_Split("[ ]", $HHmmss);}
}
// ------------------------------------------------------------------------
// Compute HMS equivalent in decimal hours to the given number of decimals.
return $NumSign.(round((3600*$hh + 60*$mm + $ss)/3600,$decimals));
} // End of HMS_to_Hours(...)
/*
###########################################################################
This function returns an HMS string equivalent to an hours argument rounded
to the specified number of decimals.
Generic. No special error checking is done.
NO DEPENDENCIES
###########################################################################
*/
function Hours_to_HMS ($Hours, $Decimals=0)
{
$hours = trim($Hours); $NumSign = ($hours < 0)? '-':'';
$hours = Str_Replace('+', '', Str_Replace('-', '', $hours));
// ---------------------
// Set working decimals.
$Q = 32;
$decimals = floor(abs(trim($Decimals)));
$decimals = ($decimals > $Q)? $Q : $decimals;
$decimals = ($decimals < 0)? 0 : $decimals;
// ------------------------------------
// Compute hours,minutes and seconds to
// the specified number of decimals.
$hh = bcAdd($hours, '0');
$min = bcMul('60', bcSub($hours, $hh, $Q),$Q);
$mm = bcAdd($min, '0');
$sec = bcMul('60', bcSub($min, $mm, $Q),$Q);
$ss = SPrintF("%1.$decimals"."f", $sec);
if ($ss < 10){$ss = "0$ss";}
// -------------------------------------------
// Try to account for that blasted 60s glitch.
if ($ss == 60) {$mm += 1; $ss = 0;}
if ($mm == 60) {$hh += 1; $mm = 0;}
// ------------------------------------------
// Construct and return time elements string.
$hh = SPrintF("%02d", $hh);
$mm = SPrintF("%02d", $mm);
$ss = SPrintf("%1.$decimals"."f", $ss);
if ($ss < 10){$ss = "0$ss";}
return "$NumSign$hh:$mm:$ss";
} // End of Hours_to_HMS (...)
/*
THIS IS THE MAIN FUNCTION AROUND WHICH THE PROGRAM IS BUILT.
THIS DEMO CAN BE REPLACED WITH YOUR OWN CUSTOM FUNCTION.
*/
function Geocentric_Ephem ($BodyID, $StartTime, $StopTime, $TimeZone, $StepSize, $Quantities)
{
$Command = URLEncode($BodyID);
$From_Horizons_API =
"https://ssd.jpl.nasa.gov/api/horizons.api?format=text" .
"&MAKE_EPHEM='YES'" .
"&EPHEM_TYPE='OBSERVER'" .
"&CENTER='500@399'" .
"&COMMAND='$Command'" .
"&OBJ_DATA='YES'" .
"&TIME_ZONE='$TimeZone'" .
"&START_TIME='$StartTime'" .
"&STOP_TIME='$StopTime'" .
"&STEP_SIZE='$StepSize'" .
"&SUPPRESS_RANGE_RATE='YES'" .
"&CSV_FORMAT='YES'" .
"&QUANTITIES='$Quantities'" ;
$w = trim(File_Get_Contents($From_Horizons_API));
return Str_Replace(",\n","\n", $w);
}
// END OF PROGRAM
?>