The basic operation for PHP to insert, sort, insert, and sort data is to insert a data to the sorted data to obtain a new ordered data with a number plus one.
Algorithm description:
The sequence starts with the first element, which can be considered to have been sorted.
Extract the next element and scan the sorted element sequence from the back to the front.
If this (sorted) element is greater than the new one, move the element to the next position.
Repeat step 3 until you find the position where the sorted elements are smaller than or equal to the new elements.
Insert the new element to the next position.
Repeat step 2.
= 0 & $ insertVal <$ arr [$ insertIndex]) {// move the number back $ arr [$ insertIndex + 1] = $ arr [$ insertIndex]; $ insertIndex --;} // Insert (locate $ insertval) $ arr [$ insertIndex + 1] = $ insertVal;} insertSort ($ arr ); print_r ($ arr);?>