Laravel Helper Functions Cheat Sheet
This cheat sheet presents Laravel's Helper utilities, covering array and object methods, path helpers, string functions, URL generators, and miscellaneous helpers, each illustrated with concise code examples to streamline backend development in PHP.
Helper is a Laravel utility class that offers a collection of powerful functions to accelerate backend development, reducing repetitive code and improving productivity.
Array & Object
Arr::add(['name' => 'Desk'], 'price', 100); // => ['name' => 'Desk', 'price' => 100]</code>
<code>Arr::collapse([[1, 2, 3], [4, 5, 6]]); // => [1, 2, 3, 4, 5, 6]</code>
<code>Arr::divide(['key1' => 'val1', 'key2' => 'val2']); // => [['key1','key2'],['val1','val2']]</code>
<code>Arr::dot($array);</code>
<code>Arr::except($array, ['key']);</code>
<code>Arr::first($array, function ($key, $value) {}, $default);</code>
<code>Arr::flatten(['name' => 'Joe', 'languages' => ['PHP', 'Ruby']]);</code>
<code>Arr::forget($array, 'foo');</code>
<code>Arr::forget($array, 'foo.bar');</code>
<code>Arr::get($array, 'foo', 'default');</code>
<code>Arr::has($array, 'products.desk');</code>
<code>Arr::only($array, ['key']);</code>
<code>Arr::pluck($array, 'key');</code>
<code>Arr::pull($array, 'key');</code>
<code>Arr::set($array, 'key', 'value');</code>
<code>Arr::set($array, 'key.subkey', 'value');</code>
<code>Arr::sort($array, function () {});</code>
<code>Arr::sortRecursive();</code>
<code>Arr::where();</code>
<code>Arr::shuffle($array, 'I-AM-GROOT');</code>
<code>Arr::wrap($array);</code>
<code>head($array);</code>
<code>last($array);Path Helpers
app_path(); // full path to the app directory</code>
<code>base_path(); // full path to the project root</code>
<code>config_path(); // full path to the config directory</code>
<code>database_path(); // full path to the database directory</code>
<code>elixir(); // path to versioned Elixir file</code>
<code>public_path(); // full path to the public directory</code>
<code>storage_path(); // full path to the storage directoryString Helpers
Str::camel($value); // convert to camelCase</code>
<code>class_basename($class); // class name without namespace</code>
<code>e('<html>'); // htmlentities</code>
<code>Str::startsWith('Foo bar.', 'Foo');</code>
<code>Str::endsWith('Foo bar.', 'bar');</code>
<code>Str::snake('fooBar'); // => foo_bar</code>
<code>Str::studly('foo_bar'); // => FooBar</code>
<code>trans('foo.bar'); // translate using localization files</code>
<code>trans_choice('foo.bar', $count); // pluralizationURLs and Links
action('FooController@method', $parameters);</code>
<code>asset('img/photo.jpg', $title, $attributes); // HTTP/HTTPS aware</code>
<code>secure_asset('img/photo.jpg', $title, $attributes);</code>
<code>route($route, $parameters, $absolute = true);</code>
<code>url('path', $parameters = [], $secure = null);Other Helpers
auth()->user(); // get authenticated user</code>
<code>back(); // redirect to previous location</code>
<code>bcrypt('my-secret-password'); // hash a password</code>
<code>collect(['taylor', 'abigail']); // create a collection</code>
<code>config('app.timezone', $default); // get config value</code>
<code>{!! csrf_field() !!} // CSRF hidden input</code>
<code>@csrf // Blade directive for CSRF</code>
<code>$token = csrf_token(); // get CSRF token</code>
<code>dd($value); // dump and die</code>
<code>dump($value); // dump variable</code>
<code>$env = env('APP_ENV'); // get environment variable</code>
<code>event(new UserRegistered($user)); // fire event</code>
<code>$user = factory(App\User::class)->make(); // model factory</code>
<code>{!! method_field('delete') !!} // spoof HTTP verb</code>
<code>@method('delete')</code>
<code>$value = old('value'); // retrieve old input</code>
<code>return redirect('/home'); // redirect response</code>
<code>$value = request('key', $default = null); // get request input</code>
<code>return response('Hello World', 200, $headers); // create response</code>
<code>$value = session('key'); // get session value</code>
<code>session()->put('key', $value); // store in session</code>
<code>value(function () { return 'bar'; }); // resolve value</code>
<code>return view('auth.login'); // render view</code>
<code>$value = with(new Foo)->work();By using these helpers, developers can write cleaner, more expressive code and focus on business logic rather than low‑level implementation details.
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