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Avoid warning in PHP 7.2 because of non-countable data #20859

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Dec 26, 2016
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Avoid warning in PHP 7.2 because of non-countable data #20859

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Only count on arrays or countables to avoid warnings in PHP 7.2
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@wouterj
wouterj committed Dec 10, 2016
commit 94253e8a23ec6d312ea72a38e438e8e4dba0fe53
2 changes: 1 addition & 1 deletion src/Symfony/Component/Form/Form.php
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Original file line number Diff line number Diff line change
Expand Up @@ -748,7 +748,7 @@ public function isEmpty()

return FormUtil::isEmpty($this->modelData) ||
// arrays, countables
0 === count($this->modelData) ||
((is_array($this->modelData) || $this->modelData instanceof \Countable) && 0 === count($this->modelData)) ||
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what about:

array() === $this->modelData ||
($this->modelData instanceof \Countable && 0 === count($this->modelData) ||

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This is to avoid calling count() on an array? If that's the case, shouldn't we fix this throughout all 0 === count() calls in the code base?

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I find it more readable :)

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creating an empty array to test if some var is also an empty array seems a bit much for syntax sugar?

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@ro0NL ro0NL Dec 16, 2016 •
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Shouldnt this be covered by FormUtils::isEmpty (or maybe add isEmptyCollection)?

Ie. what about https://github.com/symfony/symfony/blob/master/src/Symfony/Component/Form/Extension/Core/Type/ChoiceType.php#L98?

// traversables that are not countable
($this->modelData instanceof \Traversable && 0 === iterator_count($this->modelData));
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Shouldn't it check this before 0 === count($this->modelData)?

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With the latest update, it doesn't have to be done before the count.

}
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