Question

How to shuffle an array (randomize the order of the elements in an array) in PHP

Answer 1

$arr = array("aaa", "bbb", "ccc", "ddd", "eee", "fff");
print_r($arr); 
echo "<br />";
shuffle($arr);
print_r($arr); 


/*
run:

Array ( [0] => aaa [1] => bbb [2] => ccc [3] => ddd [4] => eee [5] => fff )
Array ( [0] => eee [1] => bbb [2] => ccc [3] => aaa [4] => fff [5] => ddd ) 
   
*/

70+ SQL courses for beginners and professionals

Answer 2

$arr = array("a"=>"aaa", "b"=>"bbb", "c"=>"ccc", "d"=>"ddd", "e"=>"eee");
print_r($arr); 
echo "<br />";
shuffle($arr);
print_r($arr); 


/*
run:

Array ( [a] => aaa [b] => bbb [c] => ccc [d] => ddd [e] => eee )
Array ( [0] => aaa [1] => ccc [2] => eee [3] => bbb [4] => ddd ) 
   
*/

 

70+ SQL courses for beginners and professionals

Answer 3

$arr = array(1, 2, 3 ,4, 5, 6, 7);
print_r($arr); 
echo "<br />";
shuffle($arr);
print_r($arr); 


/*
run:

Array ( [0] => 1 [1] => 2 [2] => 3 [3] => 4 [4] => 5 [5] => 6 [6] => 7 )
Array ( [0] => 2 [1] => 7 [2] => 1 [3] => 4 [4] => 5 [5] => 6 [6] => 3 ) 
   
*/

 

70+ SQL courses for beginners and professionals

Answer 4

$arr = range(1, 10);

print_r($arr); 

echo "\n";

shuffle($arr);

print_r($arr); 


 
/*
run:
     
Array
(
    [0] => 1
    [1] => 2
    [2] => 3
    [3] => 4
    [4] => 5
    [5] => 6
    [6] => 7
    [7] => 8
    [8] => 9
    [9] => 10
)

Array
(
    [0] => 1
    [1] => 10
    [2] => 7
    [3] => 5
    [4] => 4
    [5] => 9
    [6] => 2
    [7] => 8
    [8] => 3
    [9] => 6
)

*/

 

70+ SQL courses for beginners and professionals