<?php

/**
 * Генерация файлов Grpahviz dot
 */
class Dot
{
    static function getHeader ()
    {
        $header = 
            "digraph G {\n"
            . "\toverlap=false; splines=true;\n"
            . "\tfontname = \"Verdana\"\n"
            . "\tfontsize = 8\n"
            . "\tnode [\n"
            . "\t\tfontname = \"Verdana\"\n"
            . "\t\tfontsize = 8\n"
            . "\t\tshape = \"record\"\n"
            . "\t]\n"
            . "\tedge [\n"
            . "\t\tfontname = \"Verdana\"\n"
            . "\t\tfontsize = 8\n"
            . "\t]\n";

        return $header;
    }

    static function getFooter ()
    {
        $footer = "}\n";
        return $footer;         
    }    

    function assocToDot (array $array, array $label)
    {
        $result = array (self::getHeader());
        // Метки
        foreach ($label as $value) {
           $result [] = "\t\"{$value[0]}\" [ label = \"{$value[1]}\" ] \n";
        }
        // Ассоциации
        foreach ($array as $key => $value) {
            foreach ($value as $n) {
                $result [] = "\t\"$key\" -> \"$n\"\n";
            }
        }
        $result [] = self::getFooter();
        return implode("", $result);
    }
}

?>