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<?php $keys = ['a','b','c','d','e','f','g','h','i','alias']; $private = ['a','b','c','d', 'real']; $aliases = [ 'alias' => 'real', 'foo' => 'bar' ]; $aliases = array_flip($aliases); $privateAliases = array_intersect_key($aliases, array_flip($private)); print_r(array_values($privateAliases));
Output for git.master, git.master_jit, rfc.property-hooks
Array ( [0] => alias )

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