explode

The explode function takes 2 parameters - the first is the delimiter, and the second is the string to be exploded. It returns an array of strings, each of which is a substring of the original, formed by splitting the original string on boundaries formed by the string delimiter.

PHP

$my_string = 'perl, python, java';
$array = explode(', ', $my_string);
var_dump($a);
/*
Array (
	[0] => perl
	[1] => python
	[2] => java
)
*/

Ruby

my_string = 'perl, python, java';
puts my_string.split(', ');
# => ["perl", "python", "java"]