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<?php $formats = [ 'a', '', '0']; var_dump(array_filter($formats)); var_dump(array_filter($formats, fn ($value) => $value !== ''));
Output for git.master_jit, git.master, rfc.property-hooks
array(1) { [0]=> string(1) "a" } array(2) { [0]=> string(1) "a" [2]=> string(1) "0" }

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