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<?php function compare_behaviour($arg1, $arg2) { $res1 = ($arg1 ?: $arg2); $res2 = ($arg1 or $arg2); if( $res1 === $res2 ){ echo "\n========\n"; var_dump($arg1, $arg2, $res1, $res2); } } compare_behaviour(false, true); compare_behaviour(0, 1); compare_behaviour(0, 0); compare_behaviour(NULL, []);
Output for git.master, git.master_jit, rfc.property-hooks
======== bool(false) bool(true) bool(true) bool(true)

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