Enhancement: StringHelper::isEmpty() about yii-core HOT 7 CLOSED

That's simple enough check not to have a special wrapper for it:

if (\trim($string) === '') {

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That's simple enough check not to have a special wrapper for it:

if (\trim($string) === '') {

What about null? What about type casting (int, obj)? I use such function all the time and think it is quite useful.

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Wow...
It may be useful to know that trim() returns an empty string when the argument is an unset/null variable.
I didn't know that! You are right, isEmpty now useless.

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And one more question - I used to use helper ArrayHelper::isSet($array, $path) which takes an array and a key path and check if the path exists.

isSet([
  [
    'one' => 'One',
    'two' => [
        'label' => 'Two',
        'value' => 2
    ],
  ],
], 
'0.two.label') // true

Can I do the same by native php function?

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No, that you cannot do with native function.

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Actually he can do this

isset($arr[0]['two']['label'])

It checks for all keys and when any defined does not exist it returns false, I don't see a reason to use dot syntax here

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BTW, I like null operator on similar case:
return $array['foo']['boo'] ?? false;

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