Thanks! with the single quote it works!
PHP Code:
$article_title = "Ciudad data";
$article_content = "<map name='mapa1'>
<area shape='rect' coords='419,93,448,121' href='http://www.digiforos.net'>
</map>
<img src='http://www.digiforos.net/digiadoptables/historia/ciudad.png' usemap='#mapa1'> ";
}
Thank you