Pick a random array element

[AdRock]

I am trying to make myself a dummy data generator to populate my database but i'm having trouble getting a random name out of the array.

 

I am trying to create a 150 long list of random names from the array but all i get is a list of numbers which i presume are the key to each element.  What I want is to data

 

Any ideas how i can fix this?

 

$firstnames = array("0" =>"JACK",
"1" =>"OLIVER",
"2" =>"THOMAS",
"3" =>"HARRY",
"4" =>"JOSHUA");

for($i=0; $i < 150; $i++) {
$rand_firstname = array_rand($firstnames,1);
$rand_firstname = ucwords($rand_firstname);

print_r($rand_firstname);
}