Interfaces
fp = fopen($file_name, "r");
}
function read($bytes) {
return fread($this->fp, $bytes);
}
function close() {
fclose($this->fp);
}
}
$f = new rf();
/* ensure that object inside $ implements read_file interface */
if ($f instanceof read_file) {
$f->open(__FILE__);
echo $f->read(4);
$f->close();
}
?>]]>