This is a plugin to DokuWiki to allow collaborative generation of SVG images.

svg.php

<?php
/**
 * SVG Convert - Calling function
 * Copyright (C) 2005  Chris Lee <wiki@chrislee.dhs.org>
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 * --------------------------------------------------------------------
 * @author Chris Lee <wiki@chrislee.dhs.org>
 * @version v0.1
 * @package svgconvert
 * This file can be included in many PHP programs by using something like (see example.php to see how it can be used)
 *         include_once('/full_path_here_to/svgconvert/svg.php');
 *         $text_to_be_converted=svg_content($text_to_be_converted);
 * $text_to_be_converted will then contain the link to the appropriate image
 * or an error message.
 */
 
function svg_content($text) {
    global $conf;
    $svgconvert_path = "/opt/lampp/htdocs/hosts/chrislee.dhs.org/html/wiki/inc/svgconvert";
    $svgconvert_path_http = "/wiki/media/svgconvert";
    $svgconvert_media_path = "/opt/lampp/htdocs/hosts/chrislee.dhs.org/html/wiki/media/svgconvert";
    $ImageMagick_convert = "/usr/bin/convert";
 
    $filename = md5($text).".gif";
    $localfile = "$svgconvert_media_path/$filename";
    $tempfile = $svgconvert_path."/tmp/".$filename.".svg";
    $url = $svgconvert_path_http."/".$filename;
    if ( file_exists( $localfile ) )
        return ( "<img src='$url' align=absmiddle>" );
    else {
        $fp = fopen( $tempfile, 'w' );
        fputs( $fp, $text );
        fclose( $fp );
        exec( "$ImageMagick_convert $tempfile $localfile" );
        unlink( $tempfile );
        if ( file_exists( $localfile ) )
            return ( "<img src='$url' align=absmiddle>" );
        else
            return ( "Could not create SVG Image<br/>\n" );
    }
}
 
?>

There are nicer ways to generate SVG files… e.g.:

?><svg width="640" height="480" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns="http://www.w3.org/2000/svg">
 <!-- Created with SVG-edit - http://svg-edit.googlecode.com/ -->
 <g>
  <title>Layer 1</title>
  <text xml:space="preserve" text-anchor="middle" font-family="serif" font-size="24" stroke-width="0" stroke="#000000" fill="#000000" id="svg_3" y="362" x="115"><?php echo(htmlspecialchars($text)); ?></text>
 </g>
</svg><?php

btw i am thinking about embedding SVG-edit to DokuWiki WYSIWYG, so the SVG file will be saved as a DokuWiki page and embedded to another using &do=export_raw…