PHPStorm + PHPdoc - can I type hint individual array element?

https://plugins.jetbrains.com/plugin/9927-deep-assoc-completion

Image from the plugin's github repo. I use the plugin and can confirm it performs as described.

Late answer, but things have changed.

According to 2021.2 changelist it is possible now to define shape of a simple array with one line comment:

/**
 * @return array{id: int, name: string, object: \Of\Some\Class}
 */
function getArray(): array {...}

If there are object-like arrays in your code, you can now define their structure with this PHPDoc annotation: array{key: type, key: type, ...}.

PhpStorm provides code completion for such annotated arrays, reducing the time you spend on routine typing and protecting you from mistakes.

The support is limited to one-line array shape definitions. For larger structures, it is often better to use real objects and classes.

Unfortunatelly I have not found a way to define structure of multi dimensional array, and it would be great to annotate a list of such "shaped" arrays...