Andrew Barnett wrote:
I ended up using an example from the PHP website.
<?php
$input = array("Neo", "Morpheus", "Trinity", "Cypher", "Tank");
$rand_keys = array_rand($input, 2);
You're randomizing the whole array which when it gets large, will be
noticeable.
If you're using zero based arrays (like above - 'Neo' is item '0',
'Morpheus' is item '1'), I'd suggest something like this:
$input = array (...);
$num_keys = count($input);
$random_keys = array();
$num_to_fetch = 5;
for ($fetched = 0; $fetched < $num_to_fetch; $fetched++) {
$key = rand(0, $num_keys);
// if the key has already been picked,
// decrease "fetched" and try again
if (in_array($key, $random_keys)) {
$fetched--;
continue;
}
$random_keys[] = $key;
}
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