Fix options merging

[esl51]

ArrayHelper::merge merging from second array to first. Now we can override default options.

[esl51]

https://www.yiiframework.com/doc/api/2.0/yii-helpers-basearrayhelper#merge()-detail

[Borales]

@esl51 I don't think it needs to be changed:

If each array has an element with the same string key value, the latter will overwrite the former

in this case - defaultOptions will be overwriting options all the time.

[esl51]

in this case - defaultOptions will be overwriting options all the time.

But I can't overwrite this options.

This is my code (I need to add input-lg class to input):

echo $form->field($model, 'phone', ['options' => [
    'class' => 'form-group form-field-col col-xs-12'
]])->widget(PhoneInput::className(), ['defaultOptions' => [
    'class' => 'form-control input-lg' // this line is not working
]]);