PHP Function that returns an array of values of keys

[aurelia8]

I have an array like this...\[code\]Array( [0] => Array ( [id] => 10651 [userid] => 079eb9f4b9eb573f6aec93ce97ed1e7f ) [1] => Array ( [id] => 74315 [userid] => 1283612836 ) [2] => Array ( [id] => 74315 [userid] => asydk12893489123 ))\[/code\]is there a php function that returns me an array of values of the key \[code\]userid\[/code\] if I make a call like this...\[code\]func($arr_name, $key_name);\[/code\]Regards