restating plea for help with sort

Hi, I have an array with an html link as key and different $vars as val: $list = array ( '<a href="http://someplace.com/">some place</a>' => $vendor1_total, '<a href="http://anotherplace.com/">another place</a>' => $vendor2__total, [snip] etc.. some vals are numeric and some vals are "n/a" asort works to sort the array as a string, however, I need to sort the numeric vals numeric, then have the n/a's go away or be output at the bottom of the sort. Please be clear and gentle.. I'm not schooled in php, just a tinkerer trying to make this mess work. Thanks In Advance, Jim Long