Sorting Arrays

["Tom Shaw" <php.coder@xxxxxxxxx>]

I'm having a problem sorting my array and wondered if anybody had experience
sorting arrays by their values. What I need to do is resort the array below 

where the most expensive product shipping price starts at position zero no
matter how big the array is.

 

array(2) {

  [0] => array(48) {

    ["product_id"] => string(2) "34"

    ["product_name"] => string(29) "Bears Ball Cap"

    ["product_ordered_size"] => string(5) "ADULT"

    ["product_sales_price"] => string(8) "11.90"

    ["product_shipping_price"] => string(4) "7.85"

    ["product_shipping_extra"] => string(4) "0.06"

  }

  [1] => array(48) {

    ["product_id"] => string(2) "37"

    ["product_name"] => string(21) "Baldwin L Grand Piano"

    ["product_ordered_size"] => string(5) "Grand"

    ["product_sales_price"] => string(8) "11671.90"

    ["product_shipping_price"] => string(6) "500.00"

    ["product_shipping_extra"] => string(6) "450.00"

  }

 

Thanks 

 

php.coder@xxxxxxxxx