PHP : Get 9 random value from array - php

Question

I'm struggling to get 9 random values from an array, I have this php code which works fine but returns all the values. I need to only select 9 random ones with an foreach preferably.
<?php
foreach($gallerystreamobjects as $smallgallery) {
$smallgalleryArray = $smallgallery->GalleryPictures;
}
$arr = explode(",", $smallgalleryArray);
foreach($arr as $value)
{
?>
<a href="cms/uploads/<?php echo $value;?>" class="swipebox">
<div class="gallery-item-small" >
<div style="background-image:url('cms/uploads/<?php echo $value;?>')"></div>
</div>
</a>
<?php
}
?>

Answer 1

The function array_rand() will solve your problem:
$randomKeys = array_rand($arr, 9);
foreach($randomKeys AS $key){
$value = $arr[$key];
//do whatever you like
}

Answer 2

I managed to use an quick and easy way to do this. Not that its the right way, but ja, so I tried array_rand() but I kept on getting errors on it in its most basic way, I found out it was to do with the values actually going missing. Here is my current solution :
<?php
$smallgalleryArray = $gallerystreamobjects[0]->GalleryPictures;
$arr = explode(",", $smallgalleryArray);
shuffle($arr);
$count=0;
foreach($arr as $value) {
$count++;
if($count<10){
?>
<a href="cms/uploads/<?php echo $value;?>" class="swipebox">
<div class="gallery-item-small" >
<div style="background-image:url('cms/uploads/<?php echo $value;?>')"></div>
</div>
</a>
<?php
}
}
?>