quitar comentarios de estas lineas:
extension=php_mbstring.dll
extension=php_exif.dll ; Must be after mbstring as it depends on it
[mbstring]
mbstring.language = Neutral
mbstring.http_input = auto
mbstring.http_output = auto
mbstring.encoding_translation = Off
mbstring.detect_order = auto
mbstring.substitute_character = none
mbstring.func_overload = 0
mbstring.strict_detection = Off
2.- descargar mpdf, descomprimirlo y poner carpate en directorio de la web
http://www.mpdf1.com/mpdf/index.php
mPDF version 5.7 (.zip file 12MB)
3.- probar si funcionan los ejemplos que trae
http://192.168.1.16/mpdf/examples/example01_basic.php
4.- pagina asp que llama a pagina php
cadena1 ="<form method='post' name='pdf' action='pdf.php' >" & VBCrLf
cadena1 = cadena1 & "<input type='HIDDEN' name='texto' value='" & cad & "'/>" & VBCrLf
cadena1 = cadena1 & "</form>" & VBCrLf
response.write cadena1
%>
<script>document.forms["pdf"].submit();</script>
<%
5.- pagina php
<?php
include("mpdf/mpdf.php");
$cadena = $_POST['texto'];
$mpdf=new mPDF();
$mpdf->allow_charset_conversion = true;
$mpdf->charset_in = 'iso-8859-4';
$mpdf->WriteHTML($cadena);
$mpdf->Output();
exit;
?>