Introduction

PHP-SWEPH is a PHP extension to Astrodienst Swiss Ephemeris library. It's statically linked with libswe.a to implement one-to-one, C-to-PHP function mapping, no external binary executable are required.

Function Prototype/Implementation Status

Currently, for those function exported by sweph.c, swedate.c, swehouse.c, swephlib.c are implemented. IMHO, it is sufficient for general astrological calculation. Eclipse functions from swecl.c partially, and Heliographic function in swehel.c are not implemented.

For function prototypes and implementation status, please refer to the spreadsheet: https://spreadsheets.google.com/ccc?key=0Aj0Hh9d0uhcCdFo4V1VpeHB6cGFuZVRtSFkxWHRnUUE&hl=zh_TW

Installation

There's no binary distribution for download. Please get the source code and compile.

Read this for build and install instructions.

Usage

Example 1.

<?php

    swe_set_ephe_path('/usr/local/share/sweph');

    list($y, $m, $d, $h, $mi, $s) = sscanf(gmdate("Y m d G i s"), "%d %d %d %d %d %d");
    $jul_ut = swe_julday($y, $m, $d, ($h + $mi / 60 + $s / 3600), SE_GREG_CAL);

    echo '<table>';
    echo "<tr><td colspan=5>Date: $y-$m-$d $h:$mi:$s</td></tr>";
    echo "<tr><td colspan=5>Julian Date: $jul_ut</td></tr>";

    for($i = SE_SUN; $i <= SE_VESTA; $i++)
    {
        if ($i == SE_EARTH) continue;

        echo '<tr>';
        echo '<td>' . swe_get_planet_name($i) . '</td>';

        $xx = swe_calc_ut($jul_ut, $i, SEFLG_SPEED);
        if ($xx['rc'] < 0) { // error calling swe_calc_ut();
            echo "<td colspan=4>" . $xx['serr'] . "</td>";
            continue;
        }
        echo '<td>' . $xx[0] . '</td>';
        echo '<td>' . $xx[1] . '</td>';
        echo '<td>' . $xx[2] . '</td>';
        echo '<td>' . $xx[3] . '</td>';
        echo '</tr>';
    }
    echo '</table>';
?>