Basic explanation of php bubble sorting

Bubble Sort (Bubble Sort) is a relatively simple sorting algorithm in the field of computer science. It repeatedly walks through the sequence to be sorted, comparing two elements at a time and swapping them if they are in the wrong order. The work of visiting the array is repeated until no more exchanges are needed, which means that the array has been sorted. This article mainly shares with you the basic explanation of PHP bubble sorting, I hope it can help you.

function order($arr){

    $count = count($arr);

    for($a=0;$a<$count-1;$a++){

        for($i=0;$i<$count-$a-1;$i++){

            if($arr[$i]<$arr[$i+1]){

                $temp = $arr[$i+1];

                $arr[$i+1] = $arr[$i];

                $arr[$i] = $temp;

            }

        }

    }

        return $arr;

}

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