$c = mysql_connect(); echo get_resource_type($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
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.