(PECL ds >= 1.0.0)
Ds\Set::get — Returns the value at a given index
indexThe index to access, starting at 0.
The value at the requested index.
OutOfRangeException if the index is not valid.
Example #1 Ds\Set::get() example
<?php
$set = new \Ds\Set(["a", "b", "c"]);
var_dump($set->get(0));
var_dump($set->get(1));
var_dump($set->get(2));
?>
以上例程的输出类似于：
string(1) "a" string(1) "b" string(1) "c"
Example #2 Ds\Set::get() example using array syntax
<?php
$set = new \Ds\Set(["a", "b", "c"]);
var_dump($set[0]);
var_dump($set[1]);
var_dump($set[2]);
?>
以上例程的输出类似于：
string(1) "a" string(1) "b" string(1) "c"