text: Bubble Sort | An optimized version of Bubble Sort ; traverse the array from 0 to n - i - 1. Swap if the element found is greater than the next element ; IF no two elements were swapped by inner loop , then break ; Driver code to test above
code: < ? php function bubbleSort ( & $ arr ) { $ n = sizeof ( $ arr ) ; for ( $ i = 0 ; $ i < $ n ; $ i ++ ) { $ swapped = False ; for ( $ j = 0 ; $ j < $ n - $ i - 1 ; $ j ++ ) { if ( $ arr [ $ j ] > $ arr [ $ j + 1 ] ) { $ t = $ arr [ $ j ] ; $ arr [ $ j ] = $ arr [ $ j + 1 ] ; $ arr [ $ j + 1 ] = $ t ; $ swapped = True ; } } if ( $ swapped == False ) break ; } } $ arr = array ( 64 , 34 , 25 , 12 , 22 , 11 , 90 ) ; $ len = sizeof ( $ arr ) ; bubbleSort ( $ arr ) ; echo " Sorted ▁ array ▁ : ▁ STRNEWLINE " ; for ( $ i = 0 ; $ i < $ len ; $ i ++ ) echo $ arr [ $ i ] . " ▁ " ; ? >