<?php
# magic __tostring and comparator methods

# We run 4 different PHP courses - see http://www.wellho.net/course/php.html

error_reporting(E_ALL);
class table {
        function __construct($w,$h,$name) {
                $this->wid = $w;
                $this->hei = $h;
                $this->name = $name;
                }
        function getseats() {
                return 2 * (floor($this->wid / 800) +
                                floor($this->hei / 800)); }
        function getname() { return $this->name; }
        function getdoggie() {
                if ($this->wid > $this->hei) {
                        return $this->hei / 2;}
                return $this->wid / 2; }
        static function factory($material) {
                $pieces = explode(" ",trim($material));

                if (strpos($pieces[0] ,"#") > -1) {
                        return False; }

                if (count($pieces) < 2) {
                        return False; }

                $ww = array_shift($pieces);
                $hh = array_shift($pieces);
                $name = implode(" ",$pieces);

                if ($ww == "%") {
                        $tabby = new roundtable($hh,$name);
                } else {
                        $tabby = new table($ww,$hh,$name);
                }

                return $tabby;
                }
        function __tostring() {
                $wotsit = get_class($this);
                $ts = sprintf("$wotsit; %dx%d; etc",$this->wid,$this->hei);
                return $ts;
                }
        function morepeoplethan($that) {
                $c1 = $this->getseats();
                $c2 = $that->getseats();
                return ($c1 > $c2);
                }
        }
class roundtable extends table {
        function __construct($h,$name) {
                $this->wid = $h;
                $this->hei = $h;
                $this->name = $name;
        }
        function getseats() {
                return floor(3.14159 * $this->wid /800); }
        }
// -------------------------------------------------

$restaurant = array() ;
$fh = fopen("r5.txt","r");
while ($record = fgets($fh)) {
        $makes = table::factory($record);
        if ($makes) array_push($restaurant,$makes); }
foreach ($restaurant as $rt) {
        $bums = $rt->getseats();
        $called = $rt->getname();
        $woof = $rt->getdoggie();
        print ("We can seat $bums at $rt in $called. DD is $woof\n");
        }

$john = $restaurant[2];
$jane = $restaurant[4];

if ($john->morepeoplethan($jane)) {
        print ("MOST capacity is $john\n");
} else {
        print ("Most capacity is $jane\n");
}

/* sample output

munchkin:apr13 grahamellis$ php rest006.php
We can seat 6 at table; 2000x1500; etc in Window. DD is 750
We can seat 4 at table; 1200x1000; etc in The Snug. DD is 500
We can seat 4 at table; 1200x1000; etc in The Snug. DD is 500
We can seat 4 at table; 1200x1000; etc in The Snug. DD is 500
We can seat 2 at table; 700x1500; etc in The Staff Half. DD is 350
We can seat 7 at roundtable; 1800x1800; etc in Left Round. DD is 900
We can seat 8 at roundtable; 2100x2100; etc in Right Round. DD is 1050
MOST capacity is table; 1200x1000; etc
munchkin:apr13 grahamellis$

*/

?>