PHP reverse sort and Random sort code _php tutorial

Introduction to the Array_reverse () function and the shuffle () function

Array_reverse ()
The array array_reverse (array) array_reverse () function passes in an array of arguments, returning an array that is the same as the passed-in parameter value 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 ()
The bool Shuffle (array) Shuffle function randomly sorts the incoming array, returns true successfully, or 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]. " ";
?>

Two calls returned results:

4 1 2 5 3
1 5 2 4 3

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