Are there any specific PHP functions or techniques that can be utilized to optimize the code for generating graphs using JPGraph?

To optimize the code for generating graphs using JPGraph, one can utilize the caching feature provided by JPGraph. By caching the generated graphs, unnecessary processing can be avoided when the same graph is requested multiple times, resulting in improved performance.

// Enable caching for JPGraph
$graph = new Graph(800, 600);
$graph->SetScale("textlin");
$graph->img->SetCacheOptions('auto');