(PECL ps >= 1.1.1)
ps_hyphenate — Hyphenates a word
$psdoc
   , string $text
   )Hyphenates the passed word. ps_hyphenate() evaluates the value hyphenminchars (set by ps_set_value()) and the parameter hyphendict (set by ps_set_parameter()). hyphendict must be set before calling this function.
This function requires the locale category LC_CTYPE to be set properly. This is done when the extension is initialized by using the environment variables. On Unix systems read the man page of locale for more information.
psdocResource identifier of the postscript file as returned by ps_new().
text
       text should not contain any non alpha
       characters. Possible positions for breaks are returned in an array of
       interger numbers. Each number is the position of the char in 
       text after which a hyphenation can take place.
      
   An array of integers indicating the position of possible breaks in
   the text  or FALSE on failure.
  
Example #1 Hyphennate a text
<?php
$word = "Koordinatensystem";
$psdoc = ps_new();
ps_set_parameter($psdoc, "hyphendict", "hyph_de.dic");
$hyphens = ps_hyphenate($psdoc, $word);
for($i=0; $i<strlen($word); $i++) {
  echo $word[$i];
  if(in_array($i, $hyphens))
    echo "-";
}
ps_delete($psdoc);
?>
The above example will output:
Ko-ordi-na-ten-sys-tem