Code:
$random = array(
1=>"Blabla",
2=>"Blablabla",
3=>"jkdsa",
4=>"bkjsda",
);
$random_stuff = rand(1, count($random));
$_text = $random[$random_stuff];
In fact, if you use 'text here' it gives an error (or atleast I get an error) you have to use "text"