Bubble sort with PHP (small to Large)

<? php    //array element values from small to large sort      $arr =array (1,42,0,3,15,7,19,26);     //defines an intermediate variable      $temp =0;    //the number of outer loops      for ($i =0; $i <count ($arr)-1; $i + +) {        // Two array element values adjacent to the right of the inner layer are compared         for ($j =0; $j <count ($arr)-$i; $j + +) {             //when the last array element value is greater than the previous array's original value              if ($arr [$j]> $arr [$j +1]) {             //array Element Exchange                  $temp = $arr [$j];                 $arr [$j]= $arr [$j +1];                 $arr [$j +1]= $temp;              }            }        // The number of iterations of the outer array is the cause of the---count ($arr) -1        //-1 (the comparison of array element values is two comparisons          //3 array elements compared 2 times         echo  " This is the first ". ($i + 1). " Results of the second comparison ";        echo " <pre/> ";         print_r ($arr);        echo  "<pre/>" ;       }    echo  " 

Bubble sort with PHP (small to Large)