在linux 下 pdflib 多语言有关问题

在linux 下 pdflib 多语言问题
关键代码如下：

PHP code

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$path =  getcwd()."/src/fonts/newfont.TTF";
if(!PDF_set_parameter($p, "FontOutline", "myfont=$path"))
{
     PDEBUG("set parameter fontoutline fail", __FILE__, __LINE__);
}

[color=#FF0000]$fonthand = PDF_load_font($this->pdf, "myfont", "unicode", ""); //此行报错[/color]
if($fonthand == NULL)
{
     PDEBUG("failed to search for a font and prepare it for later use",__LINE__,__FILE__);
}

if(!pdf_setfont($p, $fonthand, $big))
{
    pdebug("设置字体失败",__line__,__file__);
    return false;
}

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