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I am trying to create a custom sort. I realise that it will have to be a usort function, as none of the standard methods work. abcd fgh abcd0 abcd1 abcd2 abcd3 abcd10 abcd11 abcd22 abcdefgh abcd'fgh abcd-fgh The above is the order that I need my sort to output. Please notice the following: a/ the list may contain numerical, punctuation, or characters. b/ in the order of sorting, a space comes first, then numerical, then letters, then punctuation. c/ where there are numerical characters, they are sorted in numerical order. A variety of programs, such as Lightroom, already sort in this order, but I need to emulate this is PHP. I am hoping that someone may recognise the pattern, and so be able to help with a usort function to copy it. Thanking you for your consideration.
