14 Built-in Fonts
Courier Courier-Bold
Courier-Oblique Courier-BoldOblique
Helvetica Helvetica-Bold
Helvetica-Oblique Helvetica-BoldOblique
Times-Roman Times-Bold
Times-Italic Times-BoldItalic
Symbol ZapfDingbats

You can also use other AFM fonts, postscript type-1 and TTF fonts. To use a TTF font, for example:
<?php 
PDF_set_parameter
($p,"FontOutline",
                     
"CANDY==/usr/fonts/candy.ttf");
$font PDF_findfont($p,"CANDY","host",1); 
?>
CANDY Font Example
Fonts can also be defined in the pdflib.upr file.
Character Encodings
winansi Windows code page 1252,a superset of ISO 8859-1
macroman Mac Roman encoding,i.e.,the default Macintosh character set
ebcdic EBCDIC code page 1047 as used on IBM AS/400 and S/390 systems
builtin Original encoding used by non-text (symbol) or non-Latin text fonts
host Macroman on the Mac,ebcdic on EBCDIC-based systems,and winansi on all other

Font Example
<?php 
  $p 
PDF_new(); 
  
PDF_open_file($p); 
  
PDF_set_info($p,"Creator","hello.php"); 
  
PDF_set_info($p,"Author","Rasmus Lerdorf"); 
  
PDF_set_info($p,"Title","Hello world (PHP)"); 
  
pdf_set_parameter($p"resourcefile""/usr/share/fonts/pdflib/pdflib.upr"); 
  
PDF_begin_page($p,595,842); 
  
PDF_set_text_pos($p,25,800); 
  
$fonts = array('Courier'=>0,'Courier-Bold'=>0,'Courier-BoldOblique'=>0,
                 
'Courier-Oblique'=>0,'Helvetica'=>0,'Helvetica-Bold'=>0,
                 
'Helvetica-BoldOblique'=>0,'Helvetica-Oblique'=>0,
                 
'Times-Bold'=>0,'Times-BoldItalic'=>0'Times-Italic'=>0,
                 
'Times-Roman'=>0'LuciduxSans'=>1,'Utopia-Regular'=>1,
                 
'URWGothicL-BookObli'=>1'URWPalladioL-Roma'=>1,
                 
'NimbusMonL-ReguObli'=>1,'CANDY'=>1'Arial'=>1
                
);

  foreach(
$fonts as $f=>$embed) { 
    
$font PDF_findfont($p,$f,"host",$embed); 
    
PDF_setfont($p,$font,25.0); 
    
PDF_continue_text($p,"$f (".chr(128)." Ç à á â ã ç è é ê)");
  }
  
PDF_end_page($p); 
  
PDF_close($p); 
  
$buf PDF_get_buffer($p); 
  
$len strlen($buf);
  
Header("Content-type:application/pdf");
  
Header("Content-Length:$len"); 
  
Header("Content-Disposition:inline; filename=hello_php.pdf");
  echo 
$buf
  
PDF_delete($p); 
?>
Output
The pdflib.upr file entries for this would look like this:
FontAFM
LuciduxSans=lcdxsr.afm
Utopia-Regular=UTRG____.afm
URWGothicL-BookObli=a010033l.afm
URWPalladioL-Roma=p052003l.afm
NimbusMonL-ReguObli=n022023l.afm

FontOutline
LuciduxSans=lcdxsr.pfa
Utopia-Regular=UTRG____.pfa
URWGothicL-BookObli=a010033l.pfa
URWPalladioL-Roma=p052003l.pfa
NimbusMonL-ReguObli=n022023l.pfa
CANDY=CANDY.ttf
Arial=arial.ttf