Node Load3>
node_load
Using the node_load function is really cool because it gives you access to all the data associated with a node, but excessive use of this function can be costly. There are several things we must know about what the node_load does.
First, all calls to this function will invoke all the hook_nodeapi functions defined by all modules that have been loaded at that point. The way node_load does this is by invoking the function node_invoke_nodeapi.