<p>I'm looking at the <a href="http://www.php.net/manual/en/" rel="noreferrer">PHP Manual</a>, and I'm not seeing a section on data structures that most languages have, such as lists and sets. Am I just blind or does PHP not have anything like this built in?</p>

PHP has arrays, which are actually associative arrays and can also be used as sets. Like many interpreted languages, PHP offers all this under one hood instead of providing different explicit data types.
E.g.
```
```
$lst = array(1, 2, 3);
$hsh = array(1 => "This", 2 => "is a", 3 => "test");
```
```
Also, take a look
in the manual
.