PHP - usort function too slow -

me long through usort () function problems in the processing of PHP arrays. I want to sort an array with 40-50 elements like "1.1", "2.3", "1.1.2", "3.1", 30, "3.10" ... if I only want to move some elements forward If everything works fine, but if I have an array of 40 elements, the function is very slow - so slow that it overrides the 90-second timeout ...

My code :

  function mySort ($ a, $ b) {$ a_arr = explosion (".", $ A); $ B_arr = Explosion (".", $ B); If ($ a_arr [0] & lt; $ b_arr [0]) {return -1; Break;} if ($ a_arr [0]> $ b_arr [0]) {return1; Break; for} ($ i = 0; $ a_arr [$ i] == $ b_arr [$ i]; $ i ++) {if ($ a_arr [$ i + 1] & lt; $ b_arr [$ i + 1]) {return -1; Break;} if $ ($ a_arr [$ i + 1]> $ b_arr [$ i + 1]) {return1; Break;}}} $ sort_array = array ("1.1", "2.3", "1.1.2", "3.1", "30", "3.10"); // Example, I get this data from Database Usage ($ sort_array, "mySort");   
 ... can someone help, please? Is it possible to solve?   
 
 
 What does your loop do when the values ​​are equal in the array? When two elements of the array are equal, add somewhere to indicate the 0 segment of a place.  
 This should be done when you are out of the elements of any list (A, B). Because otherwise you will get notice about access to the array-index that does not exist. (Your sample gives such a notice)