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Commit e08326d

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javiereguiluzjaviereguiluz
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minor #11516 remove invalid array type (xabbuh)
This PR was submitted for the master branch but it was merged into the 3.4 branch instead (closes #11516). Discussion ---------- remove invalid array type This is not true before Symfony 4.3 (spotted while looking into how to document symfony/symfony#30429). Commits ------- 4be9672 remove invalid array type
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‎reference/forms/types/options/group_by.rst.inc

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group_by
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~~~~~~~~
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**type**: ``array``, ``callable`` or ``string`` **default**: ``null``
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**type**: ``string`` or ``callable`` **default**: ``null``
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You can group the ``<option>`` elements of a ``<select>`` into ``<optgroup>``
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by passing a multi-dimensional array to ``choices``. See the

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