Description:
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Hello,

I'm trying to generate a PDF file who contains unicode characters. If i do this :

$fontdir = "C:/my/font/dir";
pdf_set_parameter($pdf, "FontOutline", "ArialUnicode=$fontdir/ARIALUNI.TTF");
$font = pdf_findfont($pdf, "ArialUnicode", "winansi", 0);

My chinese characters are not correctly showed (??oe离畫处)

So i tried this : 

$fontdir = "C:/my/font/dir";
pdf_set_parameter($pdf, "textformat", "utf8");
pdf_set_parameter($pdf, "FontOutline", "ArialUnicode=$fontdir/ARIALUNI.TTF");
$font = pdf_findfont($pdf, "ArialUnicode", "winansi", 0);

And then Apache (1.3.33) crashed whith the message "Apache.exe has generated errors and will be closed by Windows"

I think there is a problem with `pdf_set_parameter($pdf, "textformat", "utf8");` 

But PDFlib or PHP bug ? I don't know !

Regards

Reproduce code:
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$pdf = pdf_new();
pdf_open_file($pdf);
$fontdir = "C:/my/font/dir";
pdf_set_parameter($pdf, "textformat", "utf8");
pdf_set_parameter($pdf, "FontOutline", "ArialUnicode=$fontdir/ARIALUNI.TTF");
$font = pdf_findfont($pdf, "ArialUnicode", "winansi", 0);
pdf_setfont($pdf, $font, 24);
pdf_show_xy($pdf, "Chinese chars provided from a DB", 50, 750);

Expected result:
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Correct PDF file