(PHP 4 >= 4.0.2)
This function returns a string representing the type of the resource passed to it. If the paramater is not a valid resource, it generates an error.
$c = mysql_connect(); echo get_resource_type($c)."\n"; // prints: mysql link $fp = fopen("foo","w"); echo get_resource_type($fp)."\n"; // prints: file $doc = new_xmldoc("1.0"); echo get_resource_type($doc->doc)."\n"; // prints: domxml document