How to randomly get min value from Array? - php

Question

I have an array with multiple similar minimum value.
May I know how to randomly get one of the minimum value?
Here is my sample code:-
$aryNo = array(
0 => 34, 1 => 34, 2 => 51, 3 => 12, 4 => 12,
5 => 12, 6 => 56, 7 => 876, 8 => 453, 9 => 43,
10 => 12
);
$b = array_keys($aryNo, min($aryNo)); //Here only can get 1 value.
$intNo = $b[0];
May I know how to get min value list (3 => 12, 4 => 12,5 => 12,10 => 12) and randomly pick one of them so that I can set in $intNo?

Answer 1

$aryNo = array(
0 => 34, 1 => 34, 2 => 51, 3 => 12, 4 => 12,
5 => 12, 6 => 56, 7 => 876, 8 => 453, 9 => 43,
10 => 12
);
$b = array_keys($aryNo, min($aryNo)); //Here only can get 1 value.
// Taking a random KEY from $b
$key = array_rand($b);
// Taking a KEY from $aryNo which is under `$key`
echo $b[$key];
// Taking a VALUE from `$aryNo` which is under `$b[$key]`
echo $aryNo[$b[$key]];
The fiddle.

Answer 2

Try something like this:
$aryNo = [34,34,34,51,12,12,12,56,876,453,43,12];
foreach($aryNo as $a) {
$finalArray[$a][] = $a;
}
print("<pre>".print_r($finalArray,true)."</pre>");
$minKey = min(array_keys($finalArray));
print("<pre>".print_r($finalArray[$minKey],true)."</pre>");
$randIndex = array_rand($finalArray[$minKey]);
print_r("Key: ".$randIndex.", ".$finalArray[$minKey][$randIndex]);
First print prints:
Array
(
[34] => Array
(
[0] => 34
[1] => 34
[2] => 34
)
[51] => Array
(
[0] => 51
)
[12] => Array
(
[0] => 12
[1] => 12
[2] => 12
[3] => 12
)
[56] => Array
(
[0] => 56
)
[876] => Array
(
[0] => 876
)
[453] => Array
(
[0] => 453
)
[43] => Array
(
[0] => 43
)
)
Than you select min key, and that prints this:
Array
(
[0] => 12
[1] => 12
[2] => 12
[3] => 12
)
At the end you pick random key from this array and print the value:
Key: 2, Value: 12

Answer 3

`<?php
$sortArr = array();
$aryNo = array(0 => 34, 1 => 34, 2 => 51, 3 => 12, 4 => 12,5 =>
12, 6 => 56, 7 => 876, 8 => 453, 9 => 43,10 => 12);
asort($aryNo);
$aryNo = array_values($aryNo);
print_r($aryNo);
echo $aryNo[0];
?>`

Answer 4

I found that if I using shuffle(); also work for me.
Here is my example:-
$aryNo = array(
0 => 34, 1 => 34, 2 => 51, 3 => 12, 4 => 12,
5 => 12, 6 => 56, 7 => 876, 8 => 453, 9 => 43,
10 => 12
);
$aryNo2 = array_keys($aryNo, min($aryNo));
shuffle($aryNo2); //
$intWinNo = $aryNo2[0];
Thanks #u_mulder suggestion & answer.