<?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)); $privateAliases = array_values($privateAliases); print_r(array_merge($private, $privateAliases));
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