Hur fungerar file_exists?

Så här kanske ?

<?
$min_bild = $row[id];

if(file_exists($min_bild.jpg")) {
echo " <img src=\"home/$min_ bild.jpg\" width=\"80\" border=\"0\" alt=\"\" hspace=\"8\" vspace=\"3\"><br>";
} else {
echo " <img src=\"home/standard.jpg\" width=\"80\" border=\"0\" alt=\"finns inte\" hspace=\"8\" vspace=\"3\"><br>";
}
?>

<?
$min_bild = 'home/'.$row[id].'.jpg';

if(file_exists($min_bild)) {
echo " <img src=\"$min_bild\" width=\"80\" border=\"0\" alt=\"\" hspace=\"8\" vspace=\"3\"><br>";
} else {
echo " <img src=\"home/standard.jpg\" width=\"80\" border=\"0\" alt=\"finns inte\" hspace=\"8\" vspace=\"3\"><br>";
}
?>

fick fixa lite med det, men nu fungerar det... tackar