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<?php $values = [ "", null, false, 0, ]; foreach ($values as $v) { print (isset($v) ? "set\n" : "not set\n"); print ($v == "" ? "empty string" : "not empty string") ."\n\n"; }
Output for git.master, git.master_jit, rfc.property-hooks
set empty string not set empty string set empty string set not empty string

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