CODEWITHSUNDEEP
php
methuselah
methuselah

Reputation: 13216

Preventing array from selecting duplicate values

I currently have a piece of code that is selecting random values from an array but I would like to prevent it from selecting duplicate values. How can I achieve this? This is my code so far:

$facilities = array("Blu-ray DVD Player","Chalk board","Computer", "Projector",
"Dual data projector", "DVD/Video");

for($j = 0; $j < rand(1, 3); $j++)
   {
    $fac =  print $facilities[array_rand($facilities, 1)] . '<br>'; 
   }

Upvotes: 0

Views: 86

Answers (2)

salathe
salathe

Reputation: 51950

You can return multiple random keys from array_rand() by specifying the number to return as the second parameter.

$keys = (array) array_rand($facilities, rand(1, 3));
shuffle($keys); // array_rand() returns keys unshuffled as of 5.2.10

foreach ($keys as $key) {
    echo $facilities[$key] . '<br>';
}

Upvotes: 2

Baba
Baba

Reputation: 95131

I think you should look at array_rand 

$facilities = array("Blu-ray DVD Player","Chalk board","Computer","Data projector","Dual data projector","DVD/Video");
$rand = array_rand($facilities, 2);
                                ^----- Number of values you want 

foreach ( $rand as $key ) {
    print($facilities[$key] . "<br />");
}

Upvotes: 5

Related Questions