lol re-random PHP reverse sorting and random sorting code

Introduction to array_reverse() function and shuffle() function
array_reverse()
array array_reverse(array)array_reverse() function passes in an array as a parameter and returns an array with the same value as the passed parameter but in the opposite order.

Copy codeThe code is as follows:

$a = array(1,2,3,4,5);
$a = array_reverse($a);
for ($i =0; $i echo $a[$i]." ";
?>

The result is:
5 4 3 2 1
shuffle()
bool shuffle(array) The shuffle function randomly sorts the incoming array and returns TRUE if successful, otherwise it returns FALSE.

Copy codeThe code is as follows:

$a = array(1,2,3,4,5);
shuffle($a);
for ($i=0; $i echo $a[$i]." ";
shuffle($a);
echo "
";
for ($i= 0; $i echo $a[$i]." ";
?>

Results returned by two calls:
4 1 2 5 3
1 5 2 4 3

The above introduces the PHP reverse sorting and random sorting code of lol re-randomization, including the content of lol re-randomization. I hope it will be helpful to friends who are interested in PHP tutorials.