explode(string $separator, string $string, int $limit = PHP_INT_MAX): array
Returns an array of strings, each of which is a substring of
string formed by splitting it on boundaries formed by the string
The boundary string.
The input string.
limit is set and positive, the returned array will contain a maximum of
limit elements with the last element containing the rest of
limit parameter is negative, all components except the last –
limit are returned.
limit parameter is zero, then this is treated as 1.
Returns an array of strings created by splitting the
string parameter on boundaries formed by the
Array (  => one  => two|three|four ) Array (  => one  => two  => three )