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<?php namespace { define('PREFETCH_PREFIXES', ['chart2', 'price']); } namespace ns1 { define('PREFETCH_PREFIXES', ['chart', 'price']); echo var_dump(PREFETCH_PREFIXES); }
Output for rfc.property-hooks, git.master, git.master_jit
Warning: Constant PREFETCH_PREFIXES already defined in /in/2sdBS on line 9 array(2) { [0]=> string(6) "chart2" [1]=> string(5) "price" }

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