Array reminders - I've always found arrays and the various ways of accessing their contents more complicated than it actually is.

array_reminders.php

<?php

/*
Accessing array elements with square bracket syntax ¶
Array elements can be accessed using the array[key] syntax.
*/

$array = array(
    "foo" => "bar",
    42    => 24,
    "multi" => array(
         "dimensional" => array(
             "array" => "foo"
         )
    )
);

var_dump($array["foo"]);
var_dump($array[42]);
var_dump($array["multi"]["dimensional"]["array"]);

/*

example from: php.net/manual/en/language.types.array.php

The above example will output:

string(3) "bar"
int(24)
string(3) "foo"
*/

?>