blackphantom

i am totally new to this component. i want to know how to create a multi line chart in reference to date and some numeric value let say "weight". so that is i want to plot a graph for 4 different items on xaxis date should be denoted and on y axis weight should be denoted. all the data should be fetched from mysql database. i cannot find any example related to multi line chart so i am posting a request here. pls if some body have some code in php plz do send it too me at [email protected]