Sorting Arrays. PHP has several functions that deal with sorting arrays, and this document exists to help sort it all out. The main differences are: Some sort based on the array keys, whereas others by the values: $array['key'] = 'value';
Can I install Roof-TopÂ® EPDM membrane directly over an existing roof? You can install Roof-TopÂ® EPDM membrane over an existing roof only if a new layer of 5/8â plywood, 5/8â OSB board, or polyisocyanurate board with a fiberglass backing is used as a barrier to protect the EPDM.
You'll want to get installation. instructions for the product you choose from the roofing supplierâand, asking their advice for. your individual application is a good idea. This handout will describe installation of one particular brand of rubberized roofing, EPDM, using one particular method.