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<?php $keywords = ['foo', 'baz']; $input = 'foo bar baz qux'; var_dump(array_intersect(preg_split('/\s+/', $input), $keywords));;
Output for rfc.property-hooks, git.master, git.master_jit
array(2) { [0]=> string(3) "foo" [2]=> string(3) "baz" }

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