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<?php namespace Foo; define('true', false); define('Foo\\false', true); var_dump( true, false, 1 === 1, 1 === 0 );
Output for git.master, git.master_jit, rfc.property-hooks
Warning: Constant true already defined in /in/P62rj on line 3 bool(true) bool(false) bool(true) bool(false)

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