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Dir : ~/home/nosc/public_html/latexrender/

Edit File: latex.php.orig

<?php
/**
 * LaTeX Rendering Class - Calling function
 * Copyright (C) 2003  Benjamin Zeiss <zeiss@math.uni-goettingen.de>
 *
 * 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 Benjamin Zeiss <zeiss@math.uni-goettingen.de>
 * @version v0.8
 * @package latexrender
 * Revised by Steve Mayer
 * 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/latexrender/latex.php');
 * 		$text_to_be_converted=latex_content($text_to_be_converted);
 * $text_to_be_converted will then contain the link to the appropriate image
 * or an error code as follows (the 500 values can be altered in class.latexrender.php):
 * 	0 OK
 * 	1 Formula longer than 500 characters
 * 	2 Includes a blacklisted tag
 * 	3 (Not used) Latex rendering failed
 * 	4 Cannot create DVI file
 * 	5 Picture larger than 500 x 500 followed by x x y dimensions
 * 	6 Cannot copy image to pictures directory
 */

function latex_content($text) {
 	global	$density, $xsize, $ysize, $stringlength, $fontsize, $latexclass, $imageformat,$cachefiles;
 	// --------------------------------------------------------------------------------------------------
    // adjust this to match your system configuration
    $latexrender_path = "/home/nosc/public_html/latexrender";
    $latexrender_path_http = "http://www.imath.kiev.ua/~nosc/latexrender";
	$popupwindow = 1; //change to 0 if popup window not required, 1 if required

// --------------------------------------------------------------------------------------------------

include_once($latexrender_path."/class.latexrender.php");

preg_match_all("#\[tex\](.*?)\[/tex\]#si",$text,$tex_matches);

$latex = new LatexRender($latexrender_path."/pictures",$latexrender_path_http."/pictures",$latexrender_path."/tmp");

//put new value of variables here
	if (isset($density)) ($latex->_formula_density = $density);
	if (isset($xsize)) ($latex->_xsize_limit = $xsize);
	if (isset($ysize)) ($latex->_ysize_limit = $ysize);
	if (isset($stringlength)) ($latex->_string_length_limit = $stringlength);
	if (isset($fontsize)) ($latex->_font_size = $fontsize);
	if (isset($latexclass)) ($latex->_latexclass = $latexclass);
	if (isset($imageformat)) ($latex->_image_format = $imageformat);
	if (isset($cachefiles)) { //($latex->_cachefiles = $cachefiles);
		$latex->_cachefiles = 1;
	} else {
		$latex->_cachefiles = 0;
	}

for ($i=0; $i < count($tex_matches[0]); $i++) {
        $pos = strpos($text, $tex_matches[0][$i]);
        $latex_formula = $tex_matches[1][$i];

// if you use htmlArea to input the text then uncomment the next 6 lines
	//	$latex_formula = str_replace("&amp;","&",$latex_formula);
	//	$latex_formula = str_replace("&#38;","&",$latex_formula);
	//	$latex_formula = str_replace("&nbsp;"," ",$latex_formula);
	//	$latex_formula = str_replace("<BR>","",$latex_formula);
	//	$latex_formula = str_replace("<P>","",$latex_formula);
	//	$latex_formula = str_replace("</P>","",$latex_formula);

$url = $latex->getFormulaURL($latex_formula);

$alt_latex_formula = htmlentities($latex_formula, ENT_QUOTES);
		$alt_latex_formula = str_replace("\r","&#13;",$alt_latex_formula);
		$alt_latex_formula = str_replace("\n","&#10;",$alt_latex_formula);

if ($popupwindow==1) {
		$ahref = "<a href=\"javascript:void(0)\">";
		$slasha = "</a>";
		$ht=100;
		if (strlen($latex_formula)>100) ($ht=250);
		$texpopup = "onclick=\"newWindow=window.open('$latexrender_path_http/latexcode.php?code=".urlencode($latex_formula)."',";
		$texpopup .= "'latexCode','toolbar=no,location=no,scrollbars=yes,";
		$texpopup .= "resizable=yes,status=no,width=375,height=".$ht.",left=200,top=100');\"";

} else {
		$texpopup="";
		$ahref = "";
		$slasha = "";
	}
        if ($url != false) {
            $text = substr_replace($text, $ahref."<img src='".$url."' title='".$alt_latex_formula."' alt='".$alt_latex_formula."' border=0 align=absmiddle ".$texpopup.">".$slasha,$pos,strlen($tex_matches[0][$i]));
        } else {
            $text = substr_replace($text, "[Unparseable or potentially dangerous latex formula. <br>Error $latex->_errorcode $latex->_errorextra]",$pos,strlen($tex_matches[0][$i]));
        }
    }

return $text;
}

?>