# PHP
## Snippets
`array_map_recursive` ([source](https://stackoverflow.com/a/39637749/937377)):
```php
function array_map_recursive($callback, $array)
{
$func = function ($item) use (&$func, &$callback) {
return is_array($item) ? array_map($func, $item) : call_user_func($callback, $item);
};
return array_map($func, $array);
}
```
## PHPStorm
[Mastering PhpStorm keyboard shortcuts](https://www.jetbrains.com/help/phpstorm/mastering-keyboard-shortcuts.html) #article - "PhpStorm has keyboard shortcuts for most of its commands related to editing, navigation, refactoring, debugging, and other tasks. Memorizing these hotkeys can help you stay more productive by keeping your hands on the keyboard."
| Shortcut | Action |
| ----------------------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| Double Ctrl | Run Anything
Execute commands, such as opening a project, launching a run/debug configuration, running a command-line utility, and so on. The available commands depend on the set of plugins and tools you have configured for your project.
|
| Double Shift | Search Everywhere
Find anything related to PhpStorm or your project and open it, execute it, or jump to it.
|
| ⇧⌘A | Find Action
Find a command and execute it, open a tool window or search for a setting.
|
| ⌘O
⇧⌘O
⌥⌘O
| Find a class, file, or symbol
Find and jump to the desired class, file, or symbol.
|
| ⌘E | View recent files
Select a recently opened file from the list.
|
| ⌥⏎ | Show intention actions
Improve or optimize a code construct.
|
| ⌃Space | Basic code completion
Complete names of classes, methods, fields, and keywords within the visibility scope.
|
| ⌥↑
⌥↓
| Extend or shrink selection
Increase or decrease the scope of selection according to specific code constructs.
|
| ⌘/
⌥⌘/
| Add/remove line or block comment
Comment out a line or block of code.
|
| ⇧⌘F7 | Highlight usages in a file
Highlight all occurrences of the selected fragment in the current file.
|
## Links
[Slim](https://www.slimframework.com/) - "Slim is a PHP micro framework that helps you quickly write simple yet powerful web applications and APIs."